Finding the Fourth Proportional to 989,196.36, 1,483,748.16 and 412,581.52

Step by Step Solution

1. Step 1: Write the proportion equation
   989,196.36 : 1,483,748.16 = 412,581.52 : x
2. Step 2: Convert to fraction form
   989,196.36/1,483,748.16 = 412,581.52/x
3. Step 3: Cross multiply
   989,196.36x = 1,483,748.16 × 412,581.52
4. Step 4: Simplify right side
   989,196.36x = 612,167,071,150.00
5. Step 5: Solve for x
   x = 612,167,071,150.00/989,196.36
6. Step 6: Final answer
   x = 618,852.94