Finding the Fourth Proportional to 2,492.45, 3,739.13 and 1,031.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,492.45 : 3,739.13 = 1,031.72 : x
2. Step 2: Convert to fraction form
   2,492.45/3,739.13 = 1,031.72/x
3. Step 3: Cross multiply
   2,492.45x = 3,739.13 × 1,031.72
4. Step 4: Simplify right side
   2,492.45x = 3,857,736.25
5. Step 5: Solve for x
   x = 3,857,736.25/2,492.45
6. Step 6: Final answer
   x = 1,547.77