Finding the Fourth Proportional to 2,590.96, 3,574.32 and 1,528.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.96 : 3,574.32 = 1,528.40 : x
2. Step 2: Convert to fraction form
   2,590.96/3,574.32 = 1,528.40/x
3. Step 3: Cross multiply
   2,590.96x = 3,574.32 × 1,528.40
4. Step 4: Simplify right side
   2,590.96x = 5,462,990.69
5. Step 5: Solve for x
   x = 5,462,990.69/2,590.96
6. Step 6: Final answer
   x = 2,108.48