Finding the Fourth Proportional to 978,690.54, 1,467,297.29 and 641,816.00

Step by Step Solution

1. Step 1: Write the proportion equation
   978,690.54 : 1,467,297.29 = 641,816.00 : x
2. Step 2: Convert to fraction form
   978,690.54/1,467,297.29 = 641,816.00/x
3. Step 3: Cross multiply
   978,690.54x = 1,467,297.29 × 641,816.00
4. Step 4: Simplify right side
   978,690.54x = 941,734,871,746.69
5. Step 5: Solve for x
   x = 941,734,871,746.69/978,690.54
6. Step 6: Final answer
   x = 962,239.68