Finding the Fourth Proportional to 4,978.59, 7,463.22 and 1,689.36

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.59 : 7,463.22 = 1,689.36 : x
2. Step 2: Convert to fraction form
   4,978.59/7,463.22 = 1,689.36/x
3. Step 3: Cross multiply
   4,978.59x = 7,463.22 × 1,689.36
4. Step 4: Simplify right side
   4,978.59x = 12,608,065.34
5. Step 5: Solve for x
   x = 12,608,065.34/4,978.59
6. Step 6: Final answer
   x = 2,532.46