Finding the Fourth Proportional to 1,785.78, 2,465.96 and 1,123.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,785.78 : 2,465.96 = 1,123.74 : x
2. Step 2: Convert to fraction form
   1,785.78/2,465.96 = 1,123.74/x
3. Step 3: Cross multiply
   1,785.78x = 2,465.96 × 1,123.74
4. Step 4: Simplify right side
   1,785.78x = 2,771,092.27
5. Step 5: Solve for x
   x = 2,771,092.27/1,785.78
6. Step 6: Final answer
   x = 1,551.75