Finding the Fourth Proportional to 2,191.42, 3,023.98 and 1,247.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.42 : 3,023.98 = 1,247.37 : x
2. Step 2: Convert to fraction form
   2,191.42/3,023.98 = 1,247.37/x
3. Step 3: Cross multiply
   2,191.42x = 3,023.98 × 1,247.37
4. Step 4: Simplify right side
   2,191.42x = 3,772,007.47
5. Step 5: Solve for x
   x = 3,772,007.47/2,191.42
6. Step 6: Final answer
   x = 1,721.26