Finding the Fourth Proportional to 1,580.57, 2,176.25 and 1,530.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,580.57 : 2,176.25 = 1,530.89 : x
2. Step 2: Convert to fraction form
   1,580.57/2,176.25 = 1,530.89/x
3. Step 3: Cross multiply
   1,580.57x = 2,176.25 × 1,530.89
4. Step 4: Simplify right side
   1,580.57x = 3,331,591.71
5. Step 5: Solve for x
   x = 3,331,591.71/1,580.57
6. Step 6: Final answer
   x = 2,107.84