Finding the Fourth Proportional to 1,800.38, 2,485.74 and 1,275.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,800.38 : 2,485.74 = 1,275.50 : x
2. Step 2: Convert to fraction form
   1,800.38/2,485.74 = 1,275.50/x
3. Step 3: Cross multiply
   1,800.38x = 2,485.74 × 1,275.50
4. Step 4: Simplify right side
   1,800.38x = 3,170,548.94
5. Step 5: Solve for x
   x = 3,170,548.94/1,800.38
6. Step 6: Final answer
   x = 1,761.05