Finding the Fourth Proportional to 971,002.78, 1,340,141.67 and 584,209.15

Step by Step Solution

1. Step 1: Write the proportion equation
   971,002.78 : 1,340,141.67 = 584,209.15 : x
2. Step 2: Convert to fraction form
   971,002.78/1,340,141.67 = 584,209.15/x
3. Step 3: Cross multiply
   971,002.78x = 1,340,141.67 × 584,209.15
4. Step 4: Simplify right side
   971,002.78x = 782,923,022,559.93
5. Step 5: Solve for x
   x = 782,923,022,559.93/971,002.78
6. Step 6: Final answer
   x = 806,303.59