Finding the Fourth Proportional to 2,825,076.88, 4,238,490.12 and 978,745.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,825,076.88 : 4,238,490.12 = 978,745.87 : x
2. Step 2: Convert to fraction form
   2,825,076.88/4,238,490.12 = 978,745.87/x
3. Step 3: Cross multiply
   2,825,076.88x = 4,238,490.12 × 978,745.87
4. Step 4: Simplify right side
   2,825,076.88x = 4,148,404,699,985.81
5. Step 5: Solve for x
   x = 4,148,404,699,985.81/2,825,076.88
6. Step 6: Final answer
   x = 1,468,421.88