Finding the Fourth Proportional to 867,443.79, 1,301,610.42 and 418,547.46

Step by Step Solution

1. Step 1: Write the proportion equation
   867,443.79 : 1,301,610.42 = 418,547.46 : x
2. Step 2: Convert to fraction form
   867,443.79/1,301,610.42 = 418,547.46/x
3. Step 3: Cross multiply
   867,443.79x = 1,301,610.42 × 418,547.46
4. Step 4: Simplify right side
   867,443.79x = 544,785,735,200.53
5. Step 5: Solve for x
   x = 544,785,735,200.53/867,443.79
6. Step 6: Final answer
   x = 628,035.78