Finding the Fourth Proportional to 2,188,791.77, 3,021,338.67 and 1,317,666.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188,791.77 : 3,021,338.67 = 1,317,666.96 : x
2. Step 2: Convert to fraction form
   2,188,791.77/3,021,338.67 = 1,317,666.96/x
3. Step 3: Cross multiply
   2,188,791.77x = 3,021,338.67 × 1,317,666.96
4. Step 4: Simplify right side
   2,188,791.77x = 3,981,118,140,429.34
5. Step 5: Solve for x
   x = 3,981,118,140,429.34/2,188,791.77
6. Step 6: Final answer
   x = 1,818,865.64