Finding the Fourth Proportional to 2,118.72, 3,173.84 and 1,458.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.72 : 3,173.84 = 1,458.96 : x
2. Step 2: Convert to fraction form
   2,118.72/3,173.84 = 1,458.96/x
3. Step 3: Cross multiply
   2,118.72x = 3,173.84 × 1,458.96
4. Step 4: Simplify right side
   2,118.72x = 4,630,505.61
5. Step 5: Solve for x
   x = 4,630,505.61/2,118.72
6. Step 6: Final answer
   x = 2,185.52