Finding the Fourth Proportional to 3,459.10, 5,188.89 and 993.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,459.10 : 5,188.89 = 993.94 : x
2. Step 2: Convert to fraction form
   3,459.10/5,188.89 = 993.94/x
3. Step 3: Cross multiply
   3,459.10x = 5,188.89 × 993.94
4. Step 4: Simplify right side
   3,459.10x = 5,157,445.33
5. Step 5: Solve for x
   x = 5,157,445.33/3,459.10
6. Step 6: Final answer
   x = 1,490.98