Finding the Fourth Proportional to 726,957.39, 1,003,210.74 and 400,308.69

Step by Step Solution

1. Step 1: Write the proportion equation
   726,957.39 : 1,003,210.74 = 400,308.69 : x
2. Step 2: Convert to fraction form
   726,957.39/1,003,210.74 = 400,308.69/x
3. Step 3: Cross multiply
   726,957.39x = 1,003,210.74 × 400,308.69
4. Step 4: Simplify right side
   726,957.39x = 401,593,977,123.33
5. Step 5: Solve for x
   x = 401,593,977,123.33/726,957.39
6. Step 6: Final answer
   x = 552,431.25