Finding the Fourth Proportional to 2,038.57, 3,057.82 and 651.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,038.57 : 3,057.82 = 651.90 : x
2. Step 2: Convert to fraction form
   2,038.57/3,057.82 = 651.90/x
3. Step 3: Cross multiply
   2,038.57x = 3,057.82 × 651.90
4. Step 4: Simplify right side
   2,038.57x = 1,993,392.86
5. Step 5: Solve for x
   x = 1,993,392.86/2,038.57
6. Step 6: Final answer
   x = 977.84