Finding the Fourth Proportional to 1,870.84, 2,581.56 and 1,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.84 : 2,581.56 = 1,031.50 : x
2. Step 2: Convert to fraction form
   1,870.84/2,581.56 = 1,031.50/x
3. Step 3: Cross multiply
   1,870.84x = 2,581.56 × 1,031.50
4. Step 4: Simplify right side
   1,870.84x = 2,662,879.14
5. Step 5: Solve for x
   x = 2,662,879.14/1,870.84
6. Step 6: Final answer
   x = 1,423.36