Finding the Fourth Proportional to 2,667.64, 4,004.34 and 1,129.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.64 : 4,004.34 = 1,129.72 : x
2. Step 2: Convert to fraction form
   2,667.64/4,004.34 = 1,129.72/x
3. Step 3: Cross multiply
   2,667.64x = 4,004.34 × 1,129.72
4. Step 4: Simplify right side
   2,667.64x = 4,523,782.98
5. Step 5: Solve for x
   x = 4,523,782.98/2,667.64
6. Step 6: Final answer
   x = 1,695.80