Finding the Fourth Proportional to 2,116,348.71, 2,920,060.89 and 1,245,221.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116,348.71 : 2,920,060.89 = 1,245,221.43 : x
2. Step 2: Convert to fraction form
   2,116,348.71/2,920,060.89 = 1,245,221.43/x
3. Step 3: Cross multiply
   2,116,348.71x = 2,920,060.89 × 1,245,221.43
4. Step 4: Simplify right side
   2,116,348.71x = 3,636,122,397,132.87
5. Step 5: Solve for x
   x = 3,636,122,397,132.87/2,116,348.71
6. Step 6: Final answer
   x = 1,718,111.19