Finding the Fourth Proportional to 1,353.52, 1,868.56 and 913.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.52 : 1,868.56 = 913.74 : x
2. Step 2: Convert to fraction form
   1,353.52/1,868.56 = 913.74/x
3. Step 3: Cross multiply
   1,353.52x = 1,868.56 × 913.74
4. Step 4: Simplify right side
   1,353.52x = 1,707,378.01
5. Step 5: Solve for x
   x = 1,707,378.01/1,353.52
6. Step 6: Final answer
   x = 1,261.44