Finding the Fourth Proportional to 2,991.50, 4,128.27 and 1,749.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,991.50 : 4,128.27 = 1,749.74 : x
2. Step 2: Convert to fraction form
   2,991.50/4,128.27 = 1,749.74/x
3. Step 3: Cross multiply
   2,991.50x = 4,128.27 × 1,749.74
4. Step 4: Simplify right side
   2,991.50x = 7,223,399.15
5. Step 5: Solve for x
   x = 7,223,399.15/2,991.50
6. Step 6: Final answer
   x = 2,414.64