Finding the Fourth Proportional to 2,083.52, 3,123.86 and 783.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.52 : 3,123.86 = 783.88 : x
2. Step 2: Convert to fraction form
   2,083.52/3,123.86 = 783.88/x
3. Step 3: Cross multiply
   2,083.52x = 3,123.86 × 783.88
4. Step 4: Simplify right side
   2,083.52x = 2,448,731.38
5. Step 5: Solve for x
   x = 2,448,731.38/2,083.52
6. Step 6: Final answer
   x = 1,175.29