Finding the Fourth Proportional to 2,523.30, 3,783.74 and 879.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,523.30 : 3,783.74 = 879.81 : x
2. Step 2: Convert to fraction form
   2,523.30/3,783.74 = 879.81/x
3. Step 3: Cross multiply
   2,523.30x = 3,783.74 × 879.81
4. Step 4: Simplify right side
   2,523.30x = 3,328,967.89
5. Step 5: Solve for x
   x = 3,328,967.89/2,523.30
6. Step 6: Final answer
   x = 1,319.29