Finding the Fourth Proportional to 1,523.94, 2,103.13 and 860.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,523.94 : 2,103.13 = 860.55 : x
2. Step 2: Convert to fraction form
   1,523.94/2,103.13 = 860.55/x
3. Step 3: Cross multiply
   1,523.94x = 2,103.13 × 860.55
4. Step 4: Simplify right side
   1,523.94x = 1,809,848.52
5. Step 5: Solve for x
   x = 1,809,848.52/1,523.94
6. Step 6: Final answer
   x = 1,187.61