Finding the Fourth Proportional to 1,605,086.42, 2,407,714.27 and 407,019.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605,086.42 : 2,407,714.27 = 407,019.08 : x
2. Step 2: Convert to fraction form
   1,605,086.42/2,407,714.27 = 407,019.08/x
3. Step 3: Cross multiply
   1,605,086.42x = 2,407,714.27 × 407,019.08
4. Step 4: Simplify right side
   1,605,086.42x = 979,985,652,080.01
5. Step 5: Solve for x
   x = 979,985,652,080.01/1,605,086.42
6. Step 6: Final answer
   x = 610,550.09