Finding the Fourth Proportional to 1,216.64, 1,825.56 and 754.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216.64 : 1,825.56 = 754.30 : x
2. Step 2: Convert to fraction form
   1,216.64/1,825.56 = 754.30/x
3. Step 3: Cross multiply
   1,216.64x = 1,825.56 × 754.30
4. Step 4: Simplify right side
   1,216.64x = 1,377,019.91
5. Step 5: Solve for x
   x = 1,377,019.91/1,216.64
6. Step 6: Final answer
   x = 1,131.82