Finding the Fourth Proportional to 2,210.72, 3,315.85 and 749.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.72 : 3,315.85 = 749.83 : x
2. Step 2: Convert to fraction form
   2,210.72/3,315.85 = 749.83/x
3. Step 3: Cross multiply
   2,210.72x = 3,315.85 × 749.83
4. Step 4: Simplify right side
   2,210.72x = 2,486,323.81
5. Step 5: Solve for x
   x = 2,486,323.81/2,210.72
6. Step 6: Final answer
   x = 1,124.67