Finding the Fourth Proportional to 1,535.23, 2,117.37 and 945.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,535.23 : 2,117.37 = 945.55 : x
2. Step 2: Convert to fraction form
   1,535.23/2,117.37 = 945.55/x
3. Step 3: Cross multiply
   1,535.23x = 2,117.37 × 945.55
4. Step 4: Simplify right side
   1,535.23x = 2,002,079.20
5. Step 5: Solve for x
   x = 2,002,079.20/1,535.23
6. Step 6: Final answer
   x = 1,304.09