Finding the Fourth Proportional to 2,002.42, 2,760.60 and 1,688.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.42 : 2,760.60 = 1,688.95 : x
2. Step 2: Convert to fraction form
   2,002.42/2,760.60 = 1,688.95/x
3. Step 3: Cross multiply
   2,002.42x = 2,760.60 × 1,688.95
4. Step 4: Simplify right side
   2,002.42x = 4,662,515.37
5. Step 5: Solve for x
   x = 4,662,515.37/2,002.42
6. Step 6: Final answer
   x = 2,328.44