Finding the Fourth Proportional to 1,601.72, 2,210.39 and 938.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.72 : 2,210.39 = 938.59 : x
2. Step 2: Convert to fraction form
   1,601.72/2,210.39 = 938.59/x
3. Step 3: Cross multiply
   1,601.72x = 2,210.39 × 938.59
4. Step 4: Simplify right side
   1,601.72x = 2,074,643.25
5. Step 5: Solve for x
   x = 2,074,643.25/1,601.72
6. Step 6: Final answer
   x = 1,295.26