Finding the Fourth Proportional to 1,244,414.69, 1,867,009.59 and 445,703.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,244,414.69 : 1,867,009.59 = 445,703.18 : x
2. Step 2: Convert to fraction form
   1,244,414.69/1,867,009.59 = 445,703.18/x
3. Step 3: Cross multiply
   1,244,414.69x = 1,867,009.59 × 445,703.18
4. Step 4: Simplify right side
   1,244,414.69x = 832,132,111,353.50
5. Step 5: Solve for x
   x = 832,132,111,353.50/1,244,414.69
6. Step 6: Final answer
   x = 668,693.58