Finding the Fourth Proportional to 2,008.84, 3,012.18 and 621.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,008.84 : 3,012.18 = 621.58 : x
2. Step 2: Convert to fraction form
   2,008.84/3,012.18 = 621.58/x
3. Step 3: Cross multiply
   2,008.84x = 3,012.18 × 621.58
4. Step 4: Simplify right side
   2,008.84x = 1,872,300.98
5. Step 5: Solve for x
   x = 1,872,300.98/2,008.84
6. Step 6: Final answer
   x = 932.03