Finding the Fourth Proportional to 1,530.93, 2,112.71 and 867.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.93 : 2,112.71 = 867.77 : x
2. Step 2: Convert to fraction form
   1,530.93/2,112.71 = 867.77/x
3. Step 3: Cross multiply
   1,530.93x = 2,112.71 × 867.77
4. Step 4: Simplify right side
   1,530.93x = 1,833,341.82
5. Step 5: Solve for x
   x = 1,833,341.82/1,530.93
6. Step 6: Final answer
   x = 1,197.53