Finding the Fourth Proportional to 697,978.35, 962,964.75 and 456,402.33

Step by Step Solution

1. Step 1: Write the proportion equation
   697,978.35 : 962,964.75 = 456,402.33 : x
2. Step 2: Convert to fraction form
   697,978.35/962,964.75 = 456,402.33/x
3. Step 3: Cross multiply
   697,978.35x = 962,964.75 × 456,402.33
4. Step 4: Simplify right side
   697,978.35x = 439,499,355,607.87
5. Step 5: Solve for x
   x = 439,499,355,607.87/697,978.35
6. Step 6: Final answer
   x = 629,674.77