Finding the Fourth Proportional to 2,081.71, 3,123.15 and 782.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.71 : 3,123.15 = 782.92 : x
2. Step 2: Convert to fraction form
   2,081.71/3,123.15 = 782.92/x
3. Step 3: Cross multiply
   2,081.71x = 3,123.15 × 782.92
4. Step 4: Simplify right side
   2,081.71x = 2,445,176.60
5. Step 5: Solve for x
   x = 2,445,176.60/2,081.71
6. Step 6: Final answer
   x = 1,174.60