Finding the Fourth Proportional to 1,234.08, 1,701.27 and 840.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,234.08 : 1,701.27 = 840.42 : x
2. Step 2: Convert to fraction form
   1,234.08/1,701.27 = 840.42/x
3. Step 3: Cross multiply
   1,234.08x = 1,701.27 × 840.42
4. Step 4: Simplify right side
   1,234.08x = 1,429,781.33
5. Step 5: Solve for x
   x = 1,429,781.33/1,234.08
6. Step 6: Final answer
   x = 1,158.58