Finding the Fourth Proportional to 1,247.51, 1,721.33 and 749.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,247.51 : 1,721.33 = 749.98 : x
2. Step 2: Convert to fraction form
   1,247.51/1,721.33 = 749.98/x
3. Step 3: Cross multiply
   1,247.51x = 1,721.33 × 749.98
4. Step 4: Simplify right side
   1,247.51x = 1,290,950.72
5. Step 5: Solve for x
   x = 1,290,950.72/1,247.51
6. Step 6: Final answer
   x = 1,034.82