Finding the Fourth Proportional to 1,855,618.56, 2,778,702.69 and 1,222,613.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,855,618.56 : 2,778,702.69 = 1,222,613.28 : x
2. Step 2: Convert to fraction form
   1,855,618.56/2,778,702.69 = 1,222,613.28/x
3. Step 3: Cross multiply
   1,855,618.56x = 2,778,702.69 × 1,222,613.28
4. Step 4: Simplify right side
   1,855,618.56x = 3,397,278,809,965.72
5. Step 5: Solve for x
   x = 3,397,278,809,965.72/1,855,618.56
6. Step 6: Final answer
   x = 1,830,806.66