Finding the Fourth Proportional to 2,552.19, 3,521.12 and 1,668.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,552.19 : 3,521.12 = 1,668.51 : x
2. Step 2: Convert to fraction form
   2,552.19/3,521.12 = 1,668.51/x
3. Step 3: Cross multiply
   2,552.19x = 3,521.12 × 1,668.51
4. Step 4: Simplify right side
   2,552.19x = 5,875,015.59
5. Step 5: Solve for x
   x = 5,875,015.59/2,552.19
6. Step 6: Final answer
   x = 2,301.95