Finding the Fourth Proportional to 1,870.94, 2,581.90 and 1,031.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.94 : 2,581.90 = 1,031.69 : x
2. Step 2: Convert to fraction form
   1,870.94/2,581.90 = 1,031.69/x
3. Step 3: Cross multiply
   1,870.94x = 2,581.90 × 1,031.69
4. Step 4: Simplify right side
   1,870.94x = 2,663,720.41
5. Step 5: Solve for x
   x = 2,663,720.41/1,870.94
6. Step 6: Final answer
   x = 1,423.73