Finding the Fourth Proportional to 2,807,748.17, 4,212,087.83 and 985,640.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,807,748.17 : 4,212,087.83 = 985,640.58 : x
2. Step 2: Convert to fraction form
   2,807,748.17/4,212,087.83 = 985,640.58/x
3. Step 3: Cross multiply
   2,807,748.17x = 4,212,087.83 × 985,640.58
4. Step 4: Simplify right side
   2,807,748.17x = 4,151,604,665,783.50
5. Step 5: Solve for x
   x = 4,151,604,665,783.50/2,807,748.17
6. Step 6: Final answer
   x = 1,478,624.30