Finding the Fourth Proportional to 2,173,133.91, 2,998,774.72 and 1,206,188.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,173,133.91 : 2,998,774.72 = 1,206,188.10 : x
2. Step 2: Convert to fraction form
   2,173,133.91/2,998,774.72 = 1,206,188.10/x
3. Step 3: Cross multiply
   2,173,133.91x = 2,998,774.72 × 1,206,188.10
4. Step 4: Simplify right side
   2,173,133.91x = 3,617,086,386,326.30
5. Step 5: Solve for x
   x = 3,617,086,386,326.30/2,173,133.91
6. Step 6: Final answer
   x = 1,664,456.29