Finding the Fourth Proportional to 2,187,881.34, 3,019,580.57 and 1,221,073.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187,881.34 : 3,019,580.57 = 1,221,073.91 : x
2. Step 2: Convert to fraction form
   2,187,881.34/3,019,580.57 = 1,221,073.91/x
3. Step 3: Cross multiply
   2,187,881.34x = 3,019,580.57 × 1,221,073.91
4. Step 4: Simplify right side
   2,187,881.34x = 3,687,131,059,192.54
5. Step 5: Solve for x
   x = 3,687,131,059,192.54/2,187,881.34
6. Step 6: Final answer
   x = 1,685,251.84