Finding the Fourth Proportional to 2,123,308.17, 2,930,135.99 and 1,217,870.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123,308.17 : 2,930,135.99 = 1,217,870.73 : x
2. Step 2: Convert to fraction form
   2,123,308.17/2,930,135.99 = 1,217,870.73/x
3. Step 3: Cross multiply
   2,123,308.17x = 2,930,135.99 × 1,217,870.73
4. Step 4: Simplify right side
   2,123,308.17x = 3,568,526,851,051.22
5. Step 5: Solve for x
   x = 3,568,526,851,051.22/2,123,308.17
6. Step 6: Final answer
   x = 1,680,644.81