Finding the Fourth Proportional to 1,353.52, 1,867.49 and 856.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.52 : 1,867.49 = 856.37 : x
2. Step 2: Convert to fraction form
   1,353.52/1,867.49 = 856.37/x
3. Step 3: Cross multiply
   1,353.52x = 1,867.49 × 856.37
4. Step 4: Simplify right side
   1,353.52x = 1,599,255.50
5. Step 5: Solve for x
   x = 1,599,255.50/1,353.52
6. Step 6: Final answer
   x = 1,181.55