Finding the Fourth Proportional to 1,348.26, 1,861.20 and 1,016.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,348.26 : 1,861.20 = 1,016.80 : x
2. Step 2: Convert to fraction form
   1,348.26/1,861.20 = 1,016.80/x
3. Step 3: Cross multiply
   1,348.26x = 1,861.20 × 1,016.80
4. Step 4: Simplify right side
   1,348.26x = 1,892,468.16
5. Step 5: Solve for x
   x = 1,892,468.16/1,348.26
6. Step 6: Final answer
   x = 1,403.64