Finding the Fourth Proportional to 2,073.32, 3,109.98 and 612.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.32 : 3,109.98 = 612.48 : x
2. Step 2: Convert to fraction form
   2,073.32/3,109.98 = 612.48/x
3. Step 3: Cross multiply
   2,073.32x = 3,109.98 × 612.48
4. Step 4: Simplify right side
   2,073.32x = 1,904,800.55
5. Step 5: Solve for x
   x = 1,904,800.55/2,073.32
6. Step 6: Final answer
   x = 918.72