Finding the Fourth Proportional to 2,518.29, 3,778.73 and 1,038.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.29 : 3,778.73 = 1,038.61 : x
2. Step 2: Convert to fraction form
   2,518.29/3,778.73 = 1,038.61/x
3. Step 3: Cross multiply
   2,518.29x = 3,778.73 × 1,038.61
4. Step 4: Simplify right side
   2,518.29x = 3,924,630.19
5. Step 5: Solve for x
   x = 3,924,630.19/2,518.29
6. Step 6: Final answer
   x = 1,558.45