Finding the Fourth Proportional to 2,372.25, 3,558.51 and 985.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,372.25 : 3,558.51 = 985.71 : x
2. Step 2: Convert to fraction form
   2,372.25/3,558.51 = 985.71/x
3. Step 3: Cross multiply
   2,372.25x = 3,558.51 × 985.71
4. Step 4: Simplify right side
   2,372.25x = 3,507,658.89
5. Step 5: Solve for x
   x = 3,507,658.89/2,372.25
6. Step 6: Final answer
   x = 1,478.62