Finding the Fourth Proportional to 1,012,693.96, 1,519,788.56 and 480,216.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,693.96 : 1,519,788.56 = 480,216.76 : x
2. Step 2: Convert to fraction form
   1,012,693.96/1,519,788.56 = 480,216.76/x
3. Step 3: Cross multiply
   1,012,693.96x = 1,519,788.56 × 480,216.76
4. Step 4: Simplify right side
   1,012,693.96x = 729,827,938,168.27
5. Step 5: Solve for x
   x = 729,827,938,168.27/1,012,693.96
6. Step 6: Final answer
   x = 720,679.66