Finding the Fourth Proportional to 1,061.82, 1,465.68 and 619.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.82 : 1,465.68 = 619.86 : x
2. Step 2: Convert to fraction form
   1,061.82/1,465.68 = 619.86/x
3. Step 3: Cross multiply
   1,061.82x = 1,465.68 × 619.86
4. Step 4: Simplify right side
   1,061.82x = 908,516.40
5. Step 5: Solve for x
   x = 908,516.40/1,061.82
6. Step 6: Final answer
   x = 855.62