Finding the Fourth Proportional to 2,807,736.50, 4,212,069.99 and 985,628.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,807,736.50 : 4,212,069.99 = 985,628.78 : x
2. Step 2: Convert to fraction form
   2,807,736.50/4,212,069.99 = 985,628.78/x
3. Step 3: Cross multiply
   2,807,736.50x = 4,212,069.99 × 985,628.78
4. Step 4: Simplify right side
   2,807,736.50x = 4,151,537,400,590.17
5. Step 5: Solve for x
   x = 4,151,537,400,590.17/2,807,736.50
6. Step 6: Final answer
   x = 1,478,606.49