Finding the Fourth Proportional to 1,563,404.80, 2,338,108.80 and 1,311,462.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563,404.80 : 2,338,108.80 = 1,311,462.40 : x
2. Step 2: Convert to fraction form
   1,563,404.80/2,338,108.80 = 1,311,462.40/x
3. Step 3: Cross multiply
   1,563,404.80x = 2,338,108.80 × 1,311,462.40
4. Step 4: Simplify right side
   1,563,404.80x = 3,066,341,778,309.12
5. Step 5: Solve for x
   x = 3,066,341,778,309.12/1,563,404.80
6. Step 6: Final answer
   x = 1,961,322.99