Finding the Fourth Proportional to 1,942.18, 2,680.22 and 1,145.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.18 : 2,680.22 = 1,145.52 : x
2. Step 2: Convert to fraction form
   1,942.18/2,680.22 = 1,145.52/x
3. Step 3: Cross multiply
   1,942.18x = 2,680.22 × 1,145.52
4. Step 4: Simplify right side
   1,942.18x = 3,070,248.48
5. Step 5: Solve for x
   x = 3,070,248.48/1,942.18
6. Step 6: Final answer
   x = 1,580.83