Finding the Fourth Proportional to 1,126.72, 1,691.88 and 849.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,126.72 : 1,691.88 = 849.10 : x
2. Step 2: Convert to fraction form
   1,126.72/1,691.88 = 849.10/x
3. Step 3: Cross multiply
   1,126.72x = 1,691.88 × 849.10
4. Step 4: Simplify right side
   1,126.72x = 1,436,575.31
5. Step 5: Solve for x
   x = 1,436,575.31/1,126.72
6. Step 6: Final answer
   x = 1,275.01