Finding the Fourth Proportional to 2,276.72, 3,412.32 and 1,042.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,276.72 : 3,412.32 = 1,042.40 : x
2. Step 2: Convert to fraction form
   2,276.72/3,412.32 = 1,042.40/x
3. Step 3: Cross multiply
   2,276.72x = 3,412.32 × 1,042.40
4. Step 4: Simplify right side
   2,276.72x = 3,557,002.37
5. Step 5: Solve for x
   x = 3,557,002.37/2,276.72
6. Step 6: Final answer
   x = 1,562.34