Finding the Fourth Proportional to 2,884.56, 3,980.71 and 1,690.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,884.56 : 3,980.71 = 1,690.25 : x
2. Step 2: Convert to fraction form
   2,884.56/3,980.71 = 1,690.25/x
3. Step 3: Cross multiply
   2,884.56x = 3,980.71 × 1,690.25
4. Step 4: Simplify right side
   2,884.56x = 6,728,409.25
5. Step 5: Solve for x
   x = 6,728,409.25/2,884.56
6. Step 6: Final answer
   x = 2,332.56