Finding the Fourth Proportional to 1,538.58, 2,123.23 and 875.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,538.58 : 2,123.23 = 875.42 : x
2. Step 2: Convert to fraction form
   1,538.58/2,123.23 = 875.42/x
3. Step 3: Cross multiply
   1,538.58x = 2,123.23 × 875.42
4. Step 4: Simplify right side
   1,538.58x = 1,858,726.75
5. Step 5: Solve for x
   x = 1,858,726.75/1,538.58
6. Step 6: Final answer
   x = 1,208.08