Finding the Fourth Proportional to 683,185.76, 1,023,407.76 and 627,380.72

Step by Step Solution

1. Step 1: Write the proportion equation
   683,185.76 : 1,023,407.76 = 627,380.72 : x
2. Step 2: Convert to fraction form
   683,185.76/1,023,407.76 = 627,380.72/x
3. Step 3: Cross multiply
   683,185.76x = 1,023,407.76 × 627,380.72
4. Step 4: Simplify right side
   683,185.76x = 642,066,297,322.39
5. Step 5: Solve for x
   x = 642,066,297,322.39/683,185.76
6. Step 6: Final answer
   x = 939,812.18