Finding the Fourth Proportional to 2,621.52, 3,932.15 and 977.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.52 : 3,932.15 = 977.94 : x
2. Step 2: Convert to fraction form
   2,621.52/3,932.15 = 977.94/x
3. Step 3: Cross multiply
   2,621.52x = 3,932.15 × 977.94
4. Step 4: Simplify right side
   2,621.52x = 3,845,396.94
5. Step 5: Solve for x
   x = 3,845,396.94/2,621.52
6. Step 6: Final answer
   x = 1,466.86