Finding the Fourth Proportional to 1,373.43, 2,061.16 and 854.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.43 : 2,061.16 = 854.18 : x
2. Step 2: Convert to fraction form
   1,373.43/2,061.16 = 854.18/x
3. Step 3: Cross multiply
   1,373.43x = 2,061.16 × 854.18
4. Step 4: Simplify right side
   1,373.43x = 1,760,606.83
5. Step 5: Solve for x
   x = 1,760,606.83/1,373.43
6. Step 6: Final answer
   x = 1,281.91