Finding the Fourth Proportional to 1,777.75, 2,667.65 and 956.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,777.75 : 2,667.65 = 956.05 : x
2. Step 2: Convert to fraction form
   1,777.75/2,667.65 = 956.05/x
3. Step 3: Cross multiply
   1,777.75x = 2,667.65 × 956.05
4. Step 4: Simplify right side
   1,777.75x = 2,550,406.78
5. Step 5: Solve for x
   x = 2,550,406.78/1,777.75
6. Step 6: Final answer
   x = 1,434.63