Finding the Fourth Proportional to 2,445.72, 3,665.79 and 983.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,445.72 : 3,665.79 = 983.94 : x
2. Step 2: Convert to fraction form
   2,445.72/3,665.79 = 983.94/x
3. Step 3: Cross multiply
   2,445.72x = 3,665.79 × 983.94
4. Step 4: Simplify right side
   2,445.72x = 3,606,917.41
5. Step 5: Solve for x
   x = 3,606,917.41/2,445.72
6. Step 6: Final answer
   x = 1,474.79