Finding the Fourth Proportional to 2,746.14, 4,116.69 and 990.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,746.14 : 4,116.69 = 990.72 : x
2. Step 2: Convert to fraction form
   2,746.14/4,116.69 = 990.72/x
3. Step 3: Cross multiply
   2,746.14x = 4,116.69 × 990.72
4. Step 4: Simplify right side
   2,746.14x = 4,078,487.12
5. Step 5: Solve for x
   x = 4,078,487.12/2,746.14
6. Step 6: Final answer
   x = 1,485.17