Finding the Fourth Proportional to 1,154.39, 1,731.89 and 849.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,154.39 : 1,731.89 = 849.89 : x
2. Step 2: Convert to fraction form
   1,154.39/1,731.89 = 849.89/x
3. Step 3: Cross multiply
   1,154.39x = 1,731.89 × 849.89
4. Step 4: Simplify right side
   1,154.39x = 1,471,909.46
5. Step 5: Solve for x
   x = 1,471,909.46/1,154.39
6. Step 6: Final answer
   x = 1,275.05