Finding the Fourth Proportional to 2,191.49, 3,023.55 and 1,307.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.49 : 3,023.55 = 1,307.18 : x
2. Step 2: Convert to fraction form
   2,191.49/3,023.55 = 1,307.18/x
3. Step 3: Cross multiply
   2,191.49x = 3,023.55 × 1,307.18
4. Step 4: Simplify right side
   2,191.49x = 3,952,324.09
5. Step 5: Solve for x
   x = 3,952,324.09/2,191.49
6. Step 6: Final answer
   x = 1,803.49