Finding the Fourth Proportional to 2,289.12, 3,434.76 and 1,134.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.12 : 3,434.76 = 1,134.72 : x
2. Step 2: Convert to fraction form
   2,289.12/3,434.76 = 1,134.72/x
3. Step 3: Cross multiply
   2,289.12x = 3,434.76 × 1,134.72
4. Step 4: Simplify right side
   2,289.12x = 3,897,490.87
5. Step 5: Solve for x
   x = 3,897,490.87/2,289.12
6. Step 6: Final answer
   x = 1,702.62