Finding the Fourth Proportional to 1,870.89, 2,581.77 and 1,031.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.89 : 2,581.77 = 1,031.59 : x
2. Step 2: Convert to fraction form
   1,870.89/2,581.77 = 1,031.59/x
3. Step 3: Cross multiply
   1,870.89x = 2,581.77 × 1,031.59
4. Step 4: Simplify right side
   1,870.89x = 2,663,332.98
5. Step 5: Solve for x
   x = 2,663,332.98/1,870.89
6. Step 6: Final answer
   x = 1,423.57