Finding the Fourth Proportional to 7,128.72, 10,692.89 and 1,934.46

Step by Step Solution

1. Step 1: Write the proportion equation
   7,128.72 : 10,692.89 = 1,934.46 : x
2. Step 2: Convert to fraction form
   7,128.72/10,692.89 = 1,934.46/x
3. Step 3: Cross multiply
   7,128.72x = 10,692.89 × 1,934.46
4. Step 4: Simplify right side
   7,128.72x = 20,684,919.36
5. Step 5: Solve for x
   x = 20,684,919.36/7,128.72
6. Step 6: Final answer
   x = 2,901.63