Finding the Fourth Proportional to 1,685.73, 2,326.25 and 1,056.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.73 : 2,326.25 = 1,056.59 : x
2. Step 2: Convert to fraction form
   1,685.73/2,326.25 = 1,056.59/x
3. Step 3: Cross multiply
   1,685.73x = 2,326.25 × 1,056.59
4. Step 4: Simplify right side
   1,685.73x = 2,457,902.33
5. Step 5: Solve for x
   x = 2,457,902.33/1,685.73
6. Step 6: Final answer
   x = 1,458.07