Finding the Fourth Proportional to 1,447.34, 1,997.33 and 784.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.34 : 1,997.33 = 784.21 : x
2. Step 2: Convert to fraction form
   1,447.34/1,997.33 = 784.21/x
3. Step 3: Cross multiply
   1,447.34x = 1,997.33 × 784.21
4. Step 4: Simplify right side
   1,447.34x = 1,566,317.24
5. Step 5: Solve for x
   x = 1,566,317.24/1,447.34
6. Step 6: Final answer
   x = 1,082.20