Finding the Fourth Proportional to 2,906.01, 4,356.56 and 1,261.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,906.01 : 4,356.56 = 1,261.31 : x
2. Step 2: Convert to fraction form
   2,906.01/4,356.56 = 1,261.31/x
3. Step 3: Cross multiply
   2,906.01x = 4,356.56 × 1,261.31
4. Step 4: Simplify right side
   2,906.01x = 5,494,944.60
5. Step 5: Solve for x
   x = 5,494,944.60/2,906.01
6. Step 6: Final answer
   x = 1,890.89