Finding the Fourth Proportional to 2,288.46, 3,432.15 and 1,055.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.46 : 3,432.15 = 1,055.10 : x
2. Step 2: Convert to fraction form
   2,288.46/3,432.15 = 1,055.10/x
3. Step 3: Cross multiply
   2,288.46x = 3,432.15 × 1,055.10
4. Step 4: Simplify right side
   2,288.46x = 3,621,261.47
5. Step 5: Solve for x
   x = 3,621,261.47/2,288.46
6. Step 6: Final answer
   x = 1,582.40