Finding the Fourth Proportional to 1,345,815.99, 1,856,176.46 and 862,426.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345,815.99 : 1,856,176.46 = 862,426.13 : x
2. Step 2: Convert to fraction form
   1,345,815.99/1,856,176.46 = 862,426.13/x
3. Step 3: Cross multiply
   1,345,815.99x = 1,856,176.46 × 862,426.13
4. Step 4: Simplify right side
   1,345,815.99x = 1,600,815,067,401.89
5. Step 5: Solve for x
   x = 1,600,815,067,401.89/1,345,815.99
6. Step 6: Final answer
   x = 1,189,475.44