Finding the Fourth Proportional to 1,061.63, 1,585.74 and 897.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.63 : 1,585.74 = 897.61 : x
2. Step 2: Convert to fraction form
   1,061.63/1,585.74 = 897.61/x
3. Step 3: Cross multiply
   1,061.63x = 1,585.74 × 897.61
4. Step 4: Simplify right side
   1,061.63x = 1,423,376.08
5. Step 5: Solve for x
   x = 1,423,376.08/1,061.63
6. Step 6: Final answer
   x = 1,340.75