Finding the Fourth Proportional to 1,404,524.28, 2,106,410.58 and 393,589.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404,524.28 : 2,106,410.58 = 393,589.56 : x
2. Step 2: Convert to fraction form
   1,404,524.28/2,106,410.58 = 393,589.56/x
3. Step 3: Cross multiply
   1,404,524.28x = 2,106,410.58 × 393,589.56
4. Step 4: Simplify right side
   1,404,524.28x = 829,061,213,361.55
5. Step 5: Solve for x
   x = 829,061,213,361.55/1,404,524.28
6. Step 6: Final answer
   x = 590,279.02