Finding the Fourth Proportional to 1,654.29, 2,478.78 and 874.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,654.29 : 2,478.78 = 874.26 : x
2. Step 2: Convert to fraction form
   1,654.29/2,478.78 = 874.26/x
3. Step 3: Cross multiply
   1,654.29x = 2,478.78 × 874.26
4. Step 4: Simplify right side
   1,654.29x = 2,167,098.20
5. Step 5: Solve for x
   x = 2,167,098.20/1,654.29
6. Step 6: Final answer
   x = 1,309.99