Finding the Fourth Proportional to 2,925.47, 4,388.82 and 977.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,925.47 : 4,388.82 = 977.63 : x
2. Step 2: Convert to fraction form
   2,925.47/4,388.82 = 977.63/x
3. Step 3: Cross multiply
   2,925.47x = 4,388.82 × 977.63
4. Step 4: Simplify right side
   2,925.47x = 4,290,616.49
5. Step 5: Solve for x
   x = 4,290,616.49/2,925.47
6. Step 6: Final answer
   x = 1,466.64