Finding the Fourth Proportional to 1,352.50, 1,861.38 and 1,071.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,352.50 : 1,861.38 = 1,071.83 : x
2. Step 2: Convert to fraction form
   1,352.50/1,861.38 = 1,071.83/x
3. Step 3: Cross multiply
   1,352.50x = 1,861.38 × 1,071.83
4. Step 4: Simplify right side
   1,352.50x = 1,995,087.58
5. Step 5: Solve for x
   x = 1,995,087.58/1,352.50
6. Step 6: Final answer
   x = 1,475.11