Finding the Fourth Proportional to 2,091.12, 3,131.20 and 1,471.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.12 : 3,131.20 = 1,471.47 : x
2. Step 2: Convert to fraction form
   2,091.12/3,131.20 = 1,471.47/x
3. Step 3: Cross multiply
   2,091.12x = 3,131.20 × 1,471.47
4. Step 4: Simplify right side
   2,091.12x = 4,607,466.86
5. Step 5: Solve for x
   x = 4,607,466.86/2,091.12
6. Step 6: Final answer
   x = 2,203.35