Finding the Fourth Proportional to 2,372.74, 3,554.33 and 1,986.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,372.74 : 3,554.33 = 1,986.60 : x
2. Step 2: Convert to fraction form
   2,372.74/3,554.33 = 1,986.60/x
3. Step 3: Cross multiply
   2,372.74x = 3,554.33 × 1,986.60
4. Step 4: Simplify right side
   2,372.74x = 7,061,019.11
5. Step 5: Solve for x
   x = 7,061,019.11/2,372.74
6. Step 6: Final answer
   x = 2,975.89