Finding the Fourth Proportional to 1,491.51, 2,057.89 and 862.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.51 : 2,057.89 = 862.07 : x
2. Step 2: Convert to fraction form
   1,491.51/2,057.89 = 862.07/x
3. Step 3: Cross multiply
   1,491.51x = 2,057.89 × 862.07
4. Step 4: Simplify right side
   1,491.51x = 1,774,032.79
5. Step 5: Solve for x
   x = 1,774,032.79/1,491.51
6. Step 6: Final answer
   x = 1,189.42