Finding the Fourth Proportional to 3,459.34, 5,188.87 and 994.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,459.34 : 5,188.87 = 994.15 : x
2. Step 2: Convert to fraction form
   3,459.34/5,188.87 = 994.15/x
3. Step 3: Cross multiply
   3,459.34x = 5,188.87 × 994.15
4. Step 4: Simplify right side
   3,459.34x = 5,158,515.11
5. Step 5: Solve for x
   x = 5,158,515.11/3,459.34
6. Step 6: Final answer
   x = 1,491.18