Finding the Fourth Proportional to 1,617,066.10, 2,425,606.35 and 418,903.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617,066.10 : 2,425,606.35 = 418,903.30 : x
2. Step 2: Convert to fraction form
   1,617,066.10/2,425,606.35 = 418,903.30/x
3. Step 3: Cross multiply
   1,617,066.10x = 2,425,606.35 × 418,903.30
4. Step 4: Simplify right side
   1,617,066.10x = 1,016,094,504,515.96
5. Step 5: Solve for x
   x = 1,016,094,504,515.96/1,617,066.10
6. Step 6: Final answer
   x = 628,356.82