Finding the Fourth Proportional to 2,288.74, 3,434.52 and 1,056.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.74 : 3,434.52 = 1,056.32 : x
2. Step 2: Convert to fraction form
   2,288.74/3,434.52 = 1,056.32/x
3. Step 3: Cross multiply
   2,288.74x = 3,434.52 × 1,056.32
4. Step 4: Simplify right side
   2,288.74x = 3,627,952.17
5. Step 5: Solve for x
   x = 3,627,952.17/2,288.74
6. Step 6: Final answer
   x = 1,585.13