Finding the Fourth Proportional to 4,333.73, 6,499.42 and 1,213.55

Step by Step Solution

1. Step 1: Write the proportion equation
   4,333.73 : 6,499.42 = 1,213.55 : x
2. Step 2: Convert to fraction form
   4,333.73/6,499.42 = 1,213.55/x
3. Step 3: Cross multiply
   4,333.73x = 6,499.42 × 1,213.55
4. Step 4: Simplify right side
   4,333.73x = 7,887,335.61
5. Step 5: Solve for x
   x = 7,887,335.61/4,333.73
6. Step 6: Final answer
   x = 1,819.99