Finding the Fourth Proportional to 1,065.96, 1,470.96 and 623.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.96 : 1,470.96 = 623.94 : x
2. Step 2: Convert to fraction form
   1,065.96/1,470.96 = 623.94/x
3. Step 3: Cross multiply
   1,065.96x = 1,470.96 × 623.94
4. Step 4: Simplify right side
   1,065.96x = 917,790.78
5. Step 5: Solve for x
   x = 917,790.78/1,065.96
6. Step 6: Final answer
   x = 861.00