Finding the Fourth Proportional to 1,139,111.88, 1,571,977.08 and 622,899.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,111.88 : 1,571,977.08 = 622,899.24 : x
2. Step 2: Convert to fraction form
   1,139,111.88/1,571,977.08 = 622,899.24/x
3. Step 3: Cross multiply
   1,139,111.88x = 1,571,977.08 × 622,899.24
4. Step 4: Simplify right side
   1,139,111.88x = 979,183,328,429.42
5. Step 5: Solve for x
   x = 979,183,328,429.42/1,139,111.88
6. Step 6: Final answer
   x = 859,602.42