Finding the Fourth Proportional to 1,760.74, 2,640.34 and 938.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,760.74 : 2,640.34 = 938.82 : x
2. Step 2: Convert to fraction form
   1,760.74/2,640.34 = 938.82/x
3. Step 3: Cross multiply
   1,760.74x = 2,640.34 × 938.82
4. Step 4: Simplify right side
   1,760.74x = 2,478,804.00
5. Step 5: Solve for x
   x = 2,478,804.00/1,760.74
6. Step 6: Final answer
   x = 1,407.82