Finding the Fourth Proportional to 1,133,978.14, 1,564,815.56 and 624,680.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,133,978.14 : 1,564,815.56 = 624,680.52 : x
2. Step 2: Convert to fraction form
   1,133,978.14/1,564,815.56 = 624,680.52/x
3. Step 3: Cross multiply
   1,133,978.14x = 1,564,815.56 × 624,680.52
4. Step 4: Simplify right side
   1,133,978.14x = 977,509,797,724.89
5. Step 5: Solve for x
   x = 977,509,797,724.89/1,133,978.14
6. Step 6: Final answer
   x = 862,018.20