Finding the Fourth Proportional to 2,072.32, 3,108.52 and 611.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.32 : 3,108.52 = 611.52 : x
2. Step 2: Convert to fraction form
   2,072.32/3,108.52 = 611.52/x
3. Step 3: Cross multiply
   2,072.32x = 3,108.52 × 611.52
4. Step 4: Simplify right side
   2,072.32x = 1,900,922.15
5. Step 5: Solve for x
   x = 1,900,922.15/2,072.32
6. Step 6: Final answer
   x = 917.29