Finding the Fourth Proportional to 3,498.55, 5,246.71 and 1,158.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,498.55 : 5,246.71 = 1,158.12 : x
2. Step 2: Convert to fraction form
   3,498.55/5,246.71 = 1,158.12/x
3. Step 3: Cross multiply
   3,498.55x = 5,246.71 × 1,158.12
4. Step 4: Simplify right side
   3,498.55x = 6,076,319.79
5. Step 5: Solve for x
   x = 6,076,319.79/3,498.55
6. Step 6: Final answer
   x = 1,736.81