Finding the Fourth Proportional to 1,148.10, 1,581.57 and 914.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,148.10 : 1,581.57 = 914.82 : x
2. Step 2: Convert to fraction form
   1,148.10/1,581.57 = 914.82/x
3. Step 3: Cross multiply
   1,148.10x = 1,581.57 × 914.82
4. Step 4: Simplify right side
   1,148.10x = 1,446,851.87
5. Step 5: Solve for x
   x = 1,446,851.87/1,148.10
6. Step 6: Final answer
   x = 1,260.21