Finding the Fourth Proportional to 2,809.93, 4,213.86 and 935.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,809.93 : 4,213.86 = 935.47 : x
2. Step 2: Convert to fraction form
   2,809.93/4,213.86 = 935.47/x
3. Step 3: Cross multiply
   2,809.93x = 4,213.86 × 935.47
4. Step 4: Simplify right side
   2,809.93x = 3,941,939.61
5. Step 5: Solve for x
   x = 3,941,939.61/2,809.93
6. Step 6: Final answer
   x = 1,402.86