Finding the Fourth Proportional to 1,527.61, 2,285.94 and 1,322.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,527.61 : 2,285.94 = 1,322.88 : x
2. Step 2: Convert to fraction form
   1,527.61/2,285.94 = 1,322.88/x
3. Step 3: Cross multiply
   1,527.61x = 2,285.94 × 1,322.88
4. Step 4: Simplify right side
   1,527.61x = 3,024,024.31
5. Step 5: Solve for x
   x = 3,024,024.31/1,527.61
6. Step 6: Final answer
   x = 1,979.58