Finding the Fourth Proportional to 3,320.01, 4,980.52 and 1,128.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,320.01 : 4,980.52 = 1,128.22 : x
2. Step 2: Convert to fraction form
   3,320.01/4,980.52 = 1,128.22/x
3. Step 3: Cross multiply
   3,320.01x = 4,980.52 × 1,128.22
4. Step 4: Simplify right side
   3,320.01x = 5,619,141.36
5. Step 5: Solve for x
   x = 5,619,141.36/3,320.01
6. Step 6: Final answer
   x = 1,692.51