Finding the Fourth Proportional to 1,665,786.65, 2,298,838.77 and 1,021,857.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665,786.65 : 2,298,838.77 = 1,021,857.30 : x
2. Step 2: Convert to fraction form
   1,665,786.65/2,298,838.77 = 1,021,857.30/x
3. Step 3: Cross multiply
   1,665,786.65x = 2,298,838.77 × 1,021,857.30
4. Step 4: Simplify right side
   1,665,786.65x = 2,349,085,178,647.52
5. Step 5: Solve for x
   x = 2,349,085,178,647.52/1,665,786.65
6. Step 6: Final answer
   x = 1,410,195.71