Finding the Fourth Proportional to 1,771.25, 2,667.16 and 1,312.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,771.25 : 2,667.16 = 1,312.28 : x
2. Step 2: Convert to fraction form
   1,771.25/2,667.16 = 1,312.28/x
3. Step 3: Cross multiply
   1,771.25x = 2,667.16 × 1,312.28
4. Step 4: Simplify right side
   1,771.25x = 3,500,040.83
5. Step 5: Solve for x
   x = 3,500,040.83/1,771.25
6. Step 6: Final answer
   x = 1,976.03