Finding the Fourth Proportional to 2,979.89, 4,470.32 and 1,005.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,979.89 : 4,470.32 = 1,005.71 : x
2. Step 2: Convert to fraction form
   2,979.89/4,470.32 = 1,005.71/x
3. Step 3: Cross multiply
   2,979.89x = 4,470.32 × 1,005.71
4. Step 4: Simplify right side
   2,979.89x = 4,495,818.15
5. Step 5: Solve for x
   x = 4,495,818.15/2,979.89
6. Step 6: Final answer
   x = 1,508.72