Finding the Fourth Proportional to 3,656.28, 5,485.12 and 1,902.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,656.28 : 5,485.12 = 1,902.12 : x
2. Step 2: Convert to fraction form
   3,656.28/5,485.12 = 1,902.12/x
3. Step 3: Cross multiply
   3,656.28x = 5,485.12 × 1,902.12
4. Step 4: Simplify right side
   3,656.28x = 10,433,356.45
5. Step 5: Solve for x
   x = 10,433,356.45/3,656.28
6. Step 6: Final answer
   x = 2,853.54