Finding the Fourth Proportional to 2,436,047.12, 3,653,983.20 and 638,916.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436,047.12 : 3,653,983.20 = 638,916.32 : x
2. Step 2: Convert to fraction form
   2,436,047.12/3,653,983.20 = 638,916.32/x
3. Step 3: Cross multiply
   2,436,047.12x = 3,653,983.20 × 638,916.32
4. Step 4: Simplify right side
   2,436,047.12x = 2,334,589,499,485.82
5. Step 5: Solve for x
   x = 2,334,589,499,485.82/2,436,047.12
6. Step 6: Final answer
   x = 958,351.54