Finding the Fourth Proportional to 1,348.96, 1,861.76 and 1,265.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,348.96 : 1,861.76 = 1,265.57 : x
2. Step 2: Convert to fraction form
   1,348.96/1,861.76 = 1,265.57/x
3. Step 3: Cross multiply
   1,348.96x = 1,861.76 × 1,265.57
4. Step 4: Simplify right side
   1,348.96x = 2,356,187.60
5. Step 5: Solve for x
   x = 2,356,187.60/1,348.96
6. Step 6: Final answer
   x = 1,746.67