Finding the Fourth Proportional to 1,391,570.01, 1,905,977.72 and 1,309,863.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391,570.01 : 1,905,977.72 = 1,309,863.69 : x
2. Step 2: Convert to fraction form
   1,391,570.01/1,905,977.72 = 1,309,863.69/x
3. Step 3: Cross multiply
   1,391,570.01x = 1,905,977.72 × 1,309,863.69
4. Step 4: Simplify right side
   1,391,570.01x = 2,496,571,012,651.65
5. Step 5: Solve for x
   x = 2,496,571,012,651.65/1,391,570.01
6. Step 6: Final answer
   x = 1,794,067.85