Finding the Fourth Proportional to 1,656.78, 2,286.63 and 1,263.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,656.78 : 2,286.63 = 1,263.06 : x
2. Step 2: Convert to fraction form
   1,656.78/2,286.63 = 1,263.06/x
3. Step 3: Cross multiply
   1,656.78x = 2,286.63 × 1,263.06
4. Step 4: Simplify right side
   1,656.78x = 2,888,150.89
5. Step 5: Solve for x
   x = 2,888,150.89/1,656.78
6. Step 6: Final answer
   x = 1,743.23