Finding the Fourth Proportional to 1,870.26, 2,581.01 and 1,031.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.26 : 2,581.01 = 1,031.05 : x
2. Step 2: Convert to fraction form
   1,870.26/2,581.01 = 1,031.05/x
3. Step 3: Cross multiply
   1,870.26x = 2,581.01 × 1,031.05
4. Step 4: Simplify right side
   1,870.26x = 2,661,143.58
5. Step 5: Solve for x
   x = 2,661,143.58/1,870.26
6. Step 6: Final answer
   x = 1,422.88