Finding the Fourth Proportional to 1,669.59, 2,290.59 and 1,626.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.59 : 2,290.59 = 1,626.48 : x
2. Step 2: Convert to fraction form
   1,669.59/2,290.59 = 1,626.48/x
3. Step 3: Cross multiply
   1,669.59x = 2,290.59 × 1,626.48
4. Step 4: Simplify right side
   1,669.59x = 3,725,598.82
5. Step 5: Solve for x
   x = 3,725,598.82/1,669.59
6. Step 6: Final answer
   x = 2,231.45