Finding the Fourth Proportional to 1,870.36, 2,581.12 and 1,031.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.36 : 2,581.12 = 1,031.10 : x
2. Step 2: Convert to fraction form
   1,870.36/2,581.12 = 1,031.10/x
3. Step 3: Cross multiply
   1,870.36x = 2,581.12 × 1,031.10
4. Step 4: Simplify right side
   1,870.36x = 2,661,374.77
5. Step 5: Solve for x
   x = 2,661,374.77/1,870.36
6. Step 6: Final answer
   x = 1,422.92