Finding the Fourth Proportional to 1,380,100.28, 2,070,375.10 and 407,562.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380,100.28 : 2,070,375.10 = 407,562.93 : x
2. Step 2: Convert to fraction form
   1,380,100.28/2,070,375.10 = 407,562.93/x
3. Step 3: Cross multiply
   1,380,100.28x = 2,070,375.10 × 407,562.93
4. Step 4: Simplify right side
   1,380,100.28x = 843,808,142,464.50
5. Step 5: Solve for x
   x = 843,808,142,464.50/1,380,100.28
6. Step 6: Final answer
   x = 611,410.75