Finding the Fourth Proportional to 1,043.34, 1,438.15 and 821.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,043.34 : 1,438.15 = 821.94 : x
2. Step 2: Convert to fraction form
   1,043.34/1,438.15 = 821.94/x
3. Step 3: Cross multiply
   1,043.34x = 1,438.15 × 821.94
4. Step 4: Simplify right side
   1,043.34x = 1,182,073.01
5. Step 5: Solve for x
   x = 1,182,073.01/1,043.34
6. Step 6: Final answer
   x = 1,132.97