Finding the Fourth Proportional to 1,828.72, 2,523.40 and 1,042.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,828.72 : 2,523.40 = 1,042.56 : x
2. Step 2: Convert to fraction form
   1,828.72/2,523.40 = 1,042.56/x
3. Step 3: Cross multiply
   1,828.72x = 2,523.40 × 1,042.56
4. Step 4: Simplify right side
   1,828.72x = 2,630,795.90
5. Step 5: Solve for x
   x = 2,630,795.90/1,828.72
6. Step 6: Final answer
   x = 1,438.60