Finding the Fourth Proportional to 2,919.32, 4,379.01 and 971.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,919.32 : 4,379.01 = 971.52 : x
2. Step 2: Convert to fraction form
   2,919.32/4,379.01 = 971.52/x
3. Step 3: Cross multiply
   2,919.32x = 4,379.01 × 971.52
4. Step 4: Simplify right side
   2,919.32x = 4,254,269.04
5. Step 5: Solve for x
   x = 4,254,269.04/2,919.32
6. Step 6: Final answer
   x = 1,457.28