Finding the Fourth Proportional to 1,410.20, 1,945.25 and 1,031.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.20 : 1,945.25 = 1,031.60 : x
2. Step 2: Convert to fraction form
   1,410.20/1,945.25 = 1,031.60/x
3. Step 3: Cross multiply
   1,410.20x = 1,945.25 × 1,031.60
4. Step 4: Simplify right side
   1,410.20x = 2,006,705.02
5. Step 5: Solve for x
   x = 2,006,705.02/1,410.20
6. Step 6: Final answer
   x = 1,423.00