Finding the Fourth Proportional to 1,693.71, 2,338.33 and 1,064.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,693.71 : 2,338.33 = 1,064.78 : x
2. Step 2: Convert to fraction form
   1,693.71/2,338.33 = 1,064.78/x
3. Step 3: Cross multiply
   1,693.71x = 2,338.33 × 1,064.78
4. Step 4: Simplify right side
   1,693.71x = 2,489,807.02
5. Step 5: Solve for x
   x = 2,489,807.02/1,693.71
6. Step 6: Final answer
   x = 1,470.03