Finding the Fourth Proportional to 1,688.52, 2,330.01 and 980.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,688.52 : 2,330.01 = 980.49 : x
2. Step 2: Convert to fraction form
   1,688.52/2,330.01 = 980.49/x
3. Step 3: Cross multiply
   1,688.52x = 2,330.01 × 980.49
4. Step 4: Simplify right side
   1,688.52x = 2,284,551.50
5. Step 5: Solve for x
   x = 2,284,551.50/1,688.52
6. Step 6: Final answer
   x = 1,352.99