Finding the Fourth Proportional to 2,082.51, 3,123.89 and 783.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.51 : 3,123.89 = 783.95 : x
2. Step 2: Convert to fraction form
   2,082.51/3,123.89 = 783.95/x
3. Step 3: Cross multiply
   2,082.51x = 3,123.89 × 783.95
4. Step 4: Simplify right side
   2,082.51x = 2,448,954.03
5. Step 5: Solve for x
   x = 2,448,954.03/2,082.51
6. Step 6: Final answer
   x = 1,175.96