Finding the Fourth Proportional to 1,529.94, 2,111.31 and 866.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,529.94 : 2,111.31 = 866.79 : x
2. Step 2: Convert to fraction form
   1,529.94/2,111.31 = 866.79/x
3. Step 3: Cross multiply
   1,529.94x = 2,111.31 × 866.79
4. Step 4: Simplify right side
   1,529.94x = 1,830,062.39
5. Step 5: Solve for x
   x = 1,830,062.39/1,529.94
6. Step 6: Final answer
   x = 1,196.17