Finding the Fourth Proportional to 1,488,078.78, 2,054,537.67 and 1,143,300.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488,078.78 : 2,054,537.67 = 1,143,300.54 : x
2. Step 2: Convert to fraction form
   1,488,078.78/2,054,537.67 = 1,143,300.54/x
3. Step 3: Cross multiply
   1,488,078.78x = 2,054,537.67 × 1,143,300.54
4. Step 4: Simplify right side
   1,488,078.78x = 2,348,954,027,561.34
5. Step 5: Solve for x
   x = 2,348,954,027,561.34/1,488,078.78
6. Step 6: Final answer
   x = 1,578,514.56