Finding the Fourth Proportional to 1,061.33, 1,592.60 and 412.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.33 : 1,592.60 = 412.61 : x
2. Step 2: Convert to fraction form
   1,061.33/1,592.60 = 412.61/x
3. Step 3: Cross multiply
   1,061.33x = 1,592.60 × 412.61
4. Step 4: Simplify right side
   1,061.33x = 657,120.62
5. Step 5: Solve for x
   x = 657,120.62/1,061.33
6. Step 6: Final answer
   x = 619.15