Finding the Fourth Proportional to 2,191.31, 3,023.97 and 1,196.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.31 : 3,023.97 = 1,196.57 : x
2. Step 2: Convert to fraction form
   2,191.31/3,023.97 = 1,196.57/x
3. Step 3: Cross multiply
   2,191.31x = 3,023.97 × 1,196.57
4. Step 4: Simplify right side
   2,191.31x = 3,618,376.66
5. Step 5: Solve for x
   x = 3,618,376.66/2,191.31
6. Step 6: Final answer
   x = 1,651.24