Finding the Fourth Proportional to 2,583,978.91, 3,876,528.78 and 786,815.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,583,978.91 : 3,876,528.78 = 786,815.30 : x
2. Step 2: Convert to fraction form
   2,583,978.91/3,876,528.78 = 786,815.30/x
3. Step 3: Cross multiply
   2,583,978.91x = 3,876,528.78 × 786,815.30
4. Step 4: Simplify right side
   2,583,978.91x = 3,050,112,164,685.66
5. Step 5: Solve for x
   x = 3,050,112,164,685.66/2,583,978.91
6. Step 6: Final answer
   x = 1,180,393.60