Finding the Fourth Proportional to 3,719.25, 5,580.69 and 1,528.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,719.25 : 5,580.69 = 1,528.61 : x
2. Step 2: Convert to fraction form
   3,719.25/5,580.69 = 1,528.61/x
3. Step 3: Cross multiply
   3,719.25x = 5,580.69 × 1,528.61
4. Step 4: Simplify right side
   3,719.25x = 8,530,670.64
5. Step 5: Solve for x
   x = 8,530,670.64/3,719.25
6. Step 6: Final answer
   x = 2,293.65