Finding the Fourth Proportional to 1,490.78, 2,235.72 and 1,031.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.78 : 2,235.72 = 1,031.52 : x
2. Step 2: Convert to fraction form
   1,490.78/2,235.72 = 1,031.52/x
3. Step 3: Cross multiply
   1,490.78x = 2,235.72 × 1,031.52
4. Step 4: Simplify right side
   1,490.78x = 2,306,189.89
5. Step 5: Solve for x
   x = 2,306,189.89/1,490.78
6. Step 6: Final answer
   x = 1,546.97