Finding the Fourth Proportional to 1,061.51, 1,464.85 and 619.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.51 : 1,464.85 = 619.38 : x
2. Step 2: Convert to fraction form
   1,061.51/1,464.85 = 619.38/x
3. Step 3: Cross multiply
   1,061.51x = 1,464.85 × 619.38
4. Step 4: Simplify right side
   1,061.51x = 907,298.79
5. Step 5: Solve for x
   x = 907,298.79/1,061.51
6. Step 6: Final answer
   x = 854.72