Finding the Fourth Proportional to 1,061.38, 1,465.10 and 619.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.38 : 1,465.10 = 619.42 : x
2. Step 2: Convert to fraction form
   1,061.38/1,465.10 = 619.42/x
3. Step 3: Cross multiply
   1,061.38x = 1,465.10 × 619.42
4. Step 4: Simplify right side
   1,061.38x = 907,512.24
5. Step 5: Solve for x
   x = 907,512.24/1,061.38
6. Step 6: Final answer
   x = 855.03