Finding the Fourth Proportional to 2,116,034.61, 2,921,021.37 and 1,428,637.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116,034.61 : 2,921,021.37 = 1,428,637.65 : x
2. Step 2: Convert to fraction form
   2,116,034.61/2,921,021.37 = 1,428,637.65/x
3. Step 3: Cross multiply
   2,116,034.61x = 2,921,021.37 × 1,428,637.65
4. Step 4: Simplify right side
   2,116,034.61x = 4,173,081,105,636.58
5. Step 5: Solve for x
   x = 4,173,081,105,636.58/2,116,034.61
6. Step 6: Final answer
   x = 1,972,123.28