Finding the Fourth Proportional to 1,336.30, 1,838.37 and 1,275.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.30 : 1,838.37 = 1,275.82 : x
2. Step 2: Convert to fraction form
   1,336.30/1,838.37 = 1,275.82/x
3. Step 3: Cross multiply
   1,336.30x = 1,838.37 × 1,275.82
4. Step 4: Simplify right side
   1,336.30x = 2,345,429.21
5. Step 5: Solve for x
   x = 2,345,429.21/1,336.30
6. Step 6: Final answer
   x = 1,755.17