Finding the Fourth Proportional to 638,003.31, 880,483.73 and 351,523.32

Step by Step Solution

1. Step 1: Write the proportion equation
   638,003.31 : 880,483.73 = 351,523.32 : x
2. Step 2: Convert to fraction form
   638,003.31/880,483.73 = 351,523.32/x
3. Step 3: Cross multiply
   638,003.31x = 880,483.73 × 351,523.32
4. Step 4: Simplify right side
   638,003.31x = 309,510,563,975.58
5. Step 5: Solve for x
   x = 309,510,563,975.58/638,003.31
6. Step 6: Final answer
   x = 485,123.76