Finding the Fourth Proportional to 1,339.18, 1,848.15 and 749.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.18 : 1,848.15 = 749.75 : x
2. Step 2: Convert to fraction form
   1,339.18/1,848.15 = 749.75/x
3. Step 3: Cross multiply
   1,339.18x = 1,848.15 × 749.75
4. Step 4: Simplify right side
   1,339.18x = 1,385,641.22
5. Step 5: Solve for x
   x = 1,385,641.22/1,339.18
6. Step 6: Final answer
   x = 1,034.70