Finding the Fourth Proportional to 1,814.72, 2,720.82 and 993.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,814.72 : 2,720.82 = 993.38 : x
2. Step 2: Convert to fraction form
   1,814.72/2,720.82 = 993.38/x
3. Step 3: Cross multiply
   1,814.72x = 2,720.82 × 993.38
4. Step 4: Simplify right side
   1,814.72x = 2,702,808.17
5. Step 5: Solve for x
   x = 2,702,808.17/1,814.72
6. Step 6: Final answer
   x = 1,489.38