Finding the Fourth Proportional to 2,100,514.10, 3,143,513.55 and 1,259,669.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100,514.10 : 3,143,513.55 = 1,259,669.30 : x
2. Step 2: Convert to fraction form
   2,100,514.10/3,143,513.55 = 1,259,669.30/x
3. Step 3: Cross multiply
   2,100,514.10x = 3,143,513.55 × 1,259,669.30
4. Step 4: Simplify right side
   2,100,514.10x = 3,959,787,513,069.02
5. Step 5: Solve for x
   x = 3,959,787,513,069.02/2,100,514.10
6. Step 6: Final answer
   x = 1,885,151.60