Finding the Fourth Proportional to 1,538.75, 2,298.30 and 1,392.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,538.75 : 2,298.30 = 1,392.27 : x
2. Step 2: Convert to fraction form
   1,538.75/2,298.30 = 1,392.27/x
3. Step 3: Cross multiply
   1,538.75x = 2,298.30 × 1,392.27
4. Step 4: Simplify right side
   1,538.75x = 3,199,854.14
5. Step 5: Solve for x
   x = 3,199,854.14/1,538.75
6. Step 6: Final answer
   x = 2,079.52