Finding the Fourth Proportional to 2,591.38, 3,888.66 and 1,031.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.38 : 3,888.66 = 1,031.12 : x
2. Step 2: Convert to fraction form
   2,591.38/3,888.66 = 1,031.12/x
3. Step 3: Cross multiply
   2,591.38x = 3,888.66 × 1,031.12
4. Step 4: Simplify right side
   2,591.38x = 4,009,675.10
5. Step 5: Solve for x
   x = 4,009,675.10/2,591.38
6. Step 6: Final answer
   x = 1,547.31