Finding the Fourth Proportional to 2,116.83, 3,174.46 and 729.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.83 : 3,174.46 = 729.78 : x
2. Step 2: Convert to fraction form
   2,116.83/3,174.46 = 729.78/x
3. Step 3: Cross multiply
   2,116.83x = 3,174.46 × 729.78
4. Step 4: Simplify right side
   2,116.83x = 2,316,657.42
5. Step 5: Solve for x
   x = 2,316,657.42/2,116.83
6. Step 6: Final answer
   x = 1,094.40