Finding the Fourth Proportional to 1,592,060.15, 2,388,084.82 and 645,428.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,592,060.15 : 2,388,084.82 = 645,428.63 : x
2. Step 2: Convert to fraction form
   1,592,060.15/2,388,084.82 = 645,428.63/x
3. Step 3: Cross multiply
   1,592,060.15x = 2,388,084.82 × 645,428.63
4. Step 4: Simplify right side
   1,592,060.15x = 1,541,338,300,142.40
5. Step 5: Solve for x
   x = 1,541,338,300,142.40/1,592,060.15
6. Step 6: Final answer
   x = 968,140.75