Finding the Fourth Proportional to 1,818,715.91, 2,728,993.61 and 1,211,917.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818,715.91 : 2,728,993.61 = 1,211,917.37 : x
2. Step 2: Convert to fraction form
   1,818,715.91/2,728,993.61 = 1,211,917.37/x
3. Step 3: Cross multiply
   1,818,715.91x = 2,728,993.61 × 1,211,917.37
4. Step 4: Simplify right side
   1,818,715.91x = 3,307,314,747,962.83
5. Step 5: Solve for x
   x = 3,307,314,747,962.83/1,818,715.91
6. Step 6: Final answer
   x = 1,818,488.93