Finding the Fourth Proportional to 992,196.70, 1,487,813.61 and 581,978.08

Step by Step Solution

1. Step 1: Write the proportion equation
   992,196.70 : 1,487,813.61 = 581,978.08 : x
2. Step 2: Convert to fraction form
   992,196.70/1,487,813.61 = 581,978.08/x
3. Step 3: Cross multiply
   992,196.70x = 1,487,813.61 × 581,978.08
4. Step 4: Simplify right side
   992,196.70x = 865,874,900,706.60
5. Step 5: Solve for x
   x = 865,874,900,706.60/992,196.70
6. Step 6: Final answer
   x = 872,684.72