Finding the Fourth Proportional to 2,521.64, 3,783.18 and 983.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.64 : 3,783.18 = 983.72 : x
2. Step 2: Convert to fraction form
   2,521.64/3,783.18 = 983.72/x
3. Step 3: Cross multiply
   2,521.64x = 3,783.18 × 983.72
4. Step 4: Simplify right side
   2,521.64x = 3,721,589.83
5. Step 5: Solve for x
   x = 3,721,589.83/2,521.64
6. Step 6: Final answer
   x = 1,475.86