Finding the Fourth Proportional to 1,061.95, 1,593.53 and 412.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.95 : 1,593.53 = 412.60 : x
2. Step 2: Convert to fraction form
   1,061.95/1,593.53 = 412.60/x
3. Step 3: Cross multiply
   1,061.95x = 1,593.53 × 412.60
4. Step 4: Simplify right side
   1,061.95x = 657,480.45
5. Step 5: Solve for x
   x = 657,480.45/1,061.95
6. Step 6: Final answer
   x = 619.13