Finding the Fourth Proportional to 2,746.32, 4,118.45 and 990.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,746.32 : 4,118.45 = 990.86 : x
2. Step 2: Convert to fraction form
   2,746.32/4,118.45 = 990.86/x
3. Step 3: Cross multiply
   2,746.32x = 4,118.45 × 990.86
4. Step 4: Simplify right side
   2,746.32x = 4,080,781.82
5. Step 5: Solve for x
   x = 4,080,781.82/2,746.32
6. Step 6: Final answer
   x = 1,485.91