Finding the Fourth Proportional to 1,142,422.72, 1,576,533.54 and 626,205.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142,422.72 : 1,576,533.54 = 626,205.28 : x
2. Step 2: Convert to fraction form
   1,142,422.72/1,576,533.54 = 626,205.28/x
3. Step 3: Cross multiply
   1,142,422.72x = 1,576,533.54 × 626,205.28
4. Step 4: Simplify right side
   1,142,422.72x = 987,233,626,845.09
5. Step 5: Solve for x
   x = 987,233,626,845.09/1,142,422.72
6. Step 6: Final answer
   x = 864,157.91