Finding the Fourth Proportional to 1,665,931.36, 2,498,874.72 and 403,769.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665,931.36 : 2,498,874.72 = 403,769.92 : x
2. Step 2: Convert to fraction form
   1,665,931.36/2,498,874.72 = 403,769.92/x
3. Step 3: Cross multiply
   1,665,931.36x = 2,498,874.72 × 403,769.92
4. Step 4: Simplify right side
   1,665,931.36x = 1,008,970,445,784.42
5. Step 5: Solve for x
   x = 1,008,970,445,784.42/1,665,931.36
6. Step 6: Final answer
   x = 605,649.47