Finding the Fourth Proportional to 1,507,128.02, 2,079,716 and 862,400.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507,128.02 : 2,079,716 = 862,400.42 : x
2. Step 2: Convert to fraction form
   1,507,128.02/2,079,716 = 862,400.42/x
3. Step 3: Cross multiply
   1,507,128.02x = 2,079,716 × 862,400.42
4. Step 4: Simplify right side
   1,507,128.02x = 1,793,547,951,880.72
5. Step 5: Solve for x
   x = 1,793,547,951,880.72/1,507,128.02
6. Step 6: Final answer
   x = 1,190,043.53