Finding the Fourth Proportional to 1,861.34, 2,565.12 and 1,336.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861.34 : 2,565.12 = 1,336.46 : x
2. Step 2: Convert to fraction form
   1,861.34/2,565.12 = 1,336.46/x
3. Step 3: Cross multiply
   1,861.34x = 2,565.12 × 1,336.46
4. Step 4: Simplify right side
   1,861.34x = 3,428,180.28
5. Step 5: Solve for x
   x = 3,428,180.28/1,861.34
6. Step 6: Final answer
   x = 1,841.78