Finding the Fourth Proportional to 1,656.42, 2,285.88 and 910.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,656.42 : 2,285.88 = 910.38 : x
2. Step 2: Convert to fraction form
   1,656.42/2,285.88 = 910.38/x
3. Step 3: Cross multiply
   1,656.42x = 2,285.88 × 910.38
4. Step 4: Simplify right side
   1,656.42x = 2,081,019.43
5. Step 5: Solve for x
   x = 2,081,019.43/1,656.42
6. Step 6: Final answer
   x = 1,256.34