Finding the Fourth Proportional to 1,538.01, 2,122.46 and 839.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,538.01 : 2,122.46 = 839.37 : x
2. Step 2: Convert to fraction form
   1,538.01/2,122.46 = 839.37/x
3. Step 3: Cross multiply
   1,538.01x = 2,122.46 × 839.37
4. Step 4: Simplify right side
   1,538.01x = 1,781,525.05
5. Step 5: Solve for x
   x = 1,781,525.05/1,538.01
6. Step 6: Final answer
   x = 1,158.33