Finding the Fourth Proportional to 2,518.86, 3,777.69 and 959.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.86 : 3,777.69 = 959.07 : x
2. Step 2: Convert to fraction form
   2,518.86/3,777.69 = 959.07/x
3. Step 3: Cross multiply
   2,518.86x = 3,777.69 × 959.07
4. Step 4: Simplify right side
   2,518.86x = 3,623,069.15
5. Step 5: Solve for x
   x = 3,623,069.15/2,518.86
6. Step 6: Final answer
   x = 1,438.38