Finding the Fourth Proportional to 1,865,978,105.32, 2,798,977,621.26 and 622,405,155.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865,978,105.32 : 2,798,977,621.26 = 622,405,155.28 : x
2. Step 2: Convert to fraction form
   1,865,978,105.32/2,798,977,621.26 = 622,405,155.28/x
3. Step 3: Cross multiply
   1,865,978,105.32x = 2,798,977,621.26 × 622,405,155.28
4. Step 4: Simplify right side
   1,865,978,105.32x = 1,742,098,100,985,575,424
5. Step 5: Solve for x
   x = 1,742,098,100,985,575,424/1,865,978,105.32
6. Step 6: Final answer
   x = 933,611,222.99