Finding the Fourth Proportional to 1,468.78, 2,026.98 and 839.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,468.78 : 2,026.98 = 839.42 : x
2. Step 2: Convert to fraction form
   1,468.78/2,026.98 = 839.42/x
3. Step 3: Cross multiply
   1,468.78x = 2,026.98 × 839.42
4. Step 4: Simplify right side
   1,468.78x = 1,701,487.55
5. Step 5: Solve for x
   x = 1,701,487.55/1,468.78
6. Step 6: Final answer
   x = 1,158.44