Finding the Fourth Proportional to 2,515.59, 3,773.21 and 784.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515.59 : 3,773.21 = 784.17 : x
2. Step 2: Convert to fraction form
   2,515.59/3,773.21 = 784.17/x
3. Step 3: Cross multiply
   2,515.59x = 3,773.21 × 784.17
4. Step 4: Simplify right side
   2,515.59x = 2,958,834.16
5. Step 5: Solve for x
   x = 2,958,834.16/2,515.59
6. Step 6: Final answer
   x = 1,176.20