Finding the Fourth Proportional to 1,055.31, 1,582.56 and 729.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.31 : 1,582.56 = 729.69 : x
2. Step 2: Convert to fraction form
   1,055.31/1,582.56 = 729.69/x
3. Step 3: Cross multiply
   1,055.31x = 1,582.56 × 729.69
4. Step 4: Simplify right side
   1,055.31x = 1,154,778.21
5. Step 5: Solve for x
   x = 1,154,778.21/1,055.31
6. Step 6: Final answer
   x = 1,094.25