Finding the Fourth Proportional to 2,184.39, 3,278.58 and 1,145.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,184.39 : 3,278.58 = 1,145.10 : x
2. Step 2: Convert to fraction form
   2,184.39/3,278.58 = 1,145.10/x
3. Step 3: Cross multiply
   2,184.39x = 3,278.58 × 1,145.10
4. Step 4: Simplify right side
   2,184.39x = 3,754,301.96
5. Step 5: Solve for x
   x = 3,754,301.96/2,184.39
6. Step 6: Final answer
   x = 1,718.70