Finding the Fourth Proportional to 2,213,633.56, 3,320,799.72 and 774,718.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213,633.56 : 3,320,799.72 = 774,718.80 : x
2. Step 2: Convert to fraction form
   2,213,633.56/3,320,799.72 = 774,718.80/x
3. Step 3: Cross multiply
   2,213,633.56x = 3,320,799.72 × 774,718.80
4. Step 4: Simplify right side
   2,213,633.56x = 2,572,685,974,118.74
5. Step 5: Solve for x
   x = 2,572,685,974,118.74/2,213,633.56
6. Step 6: Final answer
   x = 1,162,200.47