Finding the Fourth Proportional to 2,082.32, 3,123 and 783.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.32 : 3,123 = 783.92 : x
2. Step 2: Convert to fraction form
   2,082.32/3,123 = 783.92/x
3. Step 3: Cross multiply
   2,082.32x = 3,123 × 783.92
4. Step 4: Simplify right side
   2,082.32x = 2,448,182.16
5. Step 5: Solve for x
   x = 2,448,182.16/2,082.32
6. Step 6: Final answer
   x = 1,175.70