Finding the Fourth Proportional to 2,590.84, 3,575.35 and 1,528.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.84 : 3,575.35 = 1,528.61 : x
2. Step 2: Convert to fraction form
   2,590.84/3,575.35 = 1,528.61/x
3. Step 3: Cross multiply
   2,590.84x = 3,575.35 × 1,528.61
4. Step 4: Simplify right side
   2,590.84x = 5,465,315.76
5. Step 5: Solve for x
   x = 5,465,315.76/2,590.84
6. Step 6: Final answer
   x = 2,109.48