Finding the Fourth Proportional to 2,930,157.91, 4,395,402.76 and 908,689.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,930,157.91 : 4,395,402.76 = 908,689.21 : x
2. Step 2: Convert to fraction form
   2,930,157.91/4,395,402.76 = 908,689.21/x
3. Step 3: Cross multiply
   2,930,157.91x = 4,395,402.76 × 908,689.21
4. Step 4: Simplify right side
   2,930,157.91x = 3,994,055,061,616.22
5. Step 5: Solve for x
   x = 3,994,055,061,616.22/2,930,157.91
6. Step 6: Final answer
   x = 1,363,085.26