Finding the Fourth Proportional to 1,339.28, 1,848.21 and 749.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.28 : 1,848.21 = 749.83 : x
2. Step 2: Convert to fraction form
   1,339.28/1,848.21 = 749.83/x
3. Step 3: Cross multiply
   1,339.28x = 1,848.21 × 749.83
4. Step 4: Simplify right side
   1,339.28x = 1,385,841.50
5. Step 5: Solve for x
   x = 1,385,841.50/1,339.28
6. Step 6: Final answer
   x = 1,034.76