Finding the Fourth Proportional to 2,920.02, 4,377.78 and 971.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,920.02 : 4,377.78 = 971.16 : x
2. Step 2: Convert to fraction form
   2,920.02/4,377.78 = 971.16/x
3. Step 3: Cross multiply
   2,920.02x = 4,377.78 × 971.16
4. Step 4: Simplify right side
   2,920.02x = 4,251,524.82
5. Step 5: Solve for x
   x = 4,251,524.82/2,920.02
6. Step 6: Final answer
   x = 1,455.99