Finding the Fourth Proportional to 1,624.47, 2,436.83 and 470.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,624.47 : 2,436.83 = 470.31 : x
2. Step 2: Convert to fraction form
   1,624.47/2,436.83 = 470.31/x
3. Step 3: Cross multiply
   1,624.47x = 2,436.83 × 470.31
4. Step 4: Simplify right side
   1,624.47x = 1,146,063.17
5. Step 5: Solve for x
   x = 1,146,063.17/1,624.47
6. Step 6: Final answer
   x = 705.50