Finding the Fourth Proportional to 1,625.98, 2,438.25 and 1,558.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,625.98 : 2,438.25 = 1,558.78 : x
2. Step 2: Convert to fraction form
   1,625.98/2,438.25 = 1,558.78/x
3. Step 3: Cross multiply
   1,625.98x = 2,438.25 × 1,558.78
4. Step 4: Simplify right side
   1,625.98x = 3,800,695.34
5. Step 5: Solve for x
   x = 3,800,695.34/1,625.98
6. Step 6: Final answer
   x = 2,337.48