Finding the Fourth Proportional to 2,915,605, 4,374,108.96 and 921,061

Step by Step Solution

1. Step 1: Write the proportion equation
   2,915,605 : 4,374,108.96 = 921,061 : x
2. Step 2: Convert to fraction form
   2,915,605/4,374,108.96 = 921,061/x
3. Step 3: Cross multiply
   2,915,605x = 4,374,108.96 × 921,061
4. Step 4: Simplify right side
   2,915,605x = 4,028,821,172,806.56
5. Step 5: Solve for x
   x = 4,028,821,172,806.56/2,915,605
6. Step 6: Final answer
   x = 1,381,813.10