Finding the Fourth Proportional to 1,077.42, 1,615.34 and 729.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077.42 : 1,615.34 = 729.89 : x
2. Step 2: Convert to fraction form
   1,077.42/1,615.34 = 729.89/x
3. Step 3: Cross multiply
   1,077.42x = 1,615.34 × 729.89
4. Step 4: Simplify right side
   1,077.42x = 1,179,008.79
5. Step 5: Solve for x
   x = 1,179,008.79/1,077.42
6. Step 6: Final answer
   x = 1,094.29