Finding the Fourth Proportional to 1,250.91, 1,871.00 and 729.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,250.91 : 1,871.00 = 729.61 : x
2. Step 2: Convert to fraction form
   1,250.91/1,871.00 = 729.61/x
3. Step 3: Cross multiply
   1,250.91x = 1,871.00 × 729.61
4. Step 4: Simplify right side
   1,250.91x = 1,365,094.72
5. Step 5: Solve for x
   x = 1,365,094.72/1,250.91
6. Step 6: Final answer
   x = 1,091.28