Finding the Fourth Proportional to 1,019,745.10, 1,530,055.05 and 521,109.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019,745.10 : 1,530,055.05 = 521,109.10 : x
2. Step 2: Convert to fraction form
   1,019,745.10/1,530,055.05 = 521,109.10/x
3. Step 3: Cross multiply
   1,019,745.10x = 1,530,055.05 × 521,109.10
4. Step 4: Simplify right side
   1,019,745.10x = 797,325,610,055.96
5. Step 5: Solve for x
   x = 797,325,610,055.96/1,019,745.10
6. Step 6: Final answer
   x = 781,887.17