Finding the Fourth Proportional to 1,065.35, 1,470.18 and 623.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.35 : 1,470.18 = 623.34 : x
2. Step 2: Convert to fraction form
   1,065.35/1,470.18 = 623.34/x
3. Step 3: Cross multiply
   1,065.35x = 1,470.18 × 623.34
4. Step 4: Simplify right side
   1,065.35x = 916,422.00
5. Step 5: Solve for x
   x = 916,422.00/1,065.35
6. Step 6: Final answer
   x = 860.21