Finding the Fourth Proportional to 708,994.16, 978,372.96 and 403,028

Step by Step Solution

1. Step 1: Write the proportion equation
   708,994.16 : 978,372.96 = 403,028 : x
2. Step 2: Convert to fraction form
   708,994.16/978,372.96 = 403,028/x
3. Step 3: Cross multiply
   708,994.16x = 978,372.96 × 403,028
4. Step 4: Simplify right side
   708,994.16x = 394,311,697,322.88
5. Step 5: Solve for x
   x = 394,311,697,322.88/708,994.16
6. Step 6: Final answer
   x = 556,156.48