Finding the Fourth Proportional to 1,343.86, 1,854.40 and 754.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.86 : 1,854.40 = 754.28 : x
2. Step 2: Convert to fraction form
   1,343.86/1,854.40 = 754.28/x
3. Step 3: Cross multiply
   1,343.86x = 1,854.40 × 754.28
4. Step 4: Simplify right side
   1,343.86x = 1,398,736.83
5. Step 5: Solve for x
   x = 1,398,736.83/1,343.86
6. Step 6: Final answer
   x = 1,040.84