Finding the Fourth Proportional to 1,294,667.87, 1,786,852.10 and 778,943.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,294,667.87 : 1,786,852.10 = 778,943.03 : x
2. Step 2: Convert to fraction form
   1,294,667.87/1,786,852.10 = 778,943.03/x
3. Step 3: Cross multiply
   1,294,667.87x = 1,786,852.10 × 778,943.03
4. Step 4: Simplify right side
   1,294,667.87x = 1,391,855,981,948.96
5. Step 5: Solve for x
   x = 1,391,855,981,948.96/1,294,667.87
6. Step 6: Final answer
   x = 1,075,067.99