Finding the Fourth Proportional to 1,111.02, 1,666.52 and 867.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.02 : 1,666.52 = 867.74 : x
2. Step 2: Convert to fraction form
   1,111.02/1,666.52 = 867.74/x
3. Step 3: Cross multiply
   1,111.02x = 1,666.52 × 867.74
4. Step 4: Simplify right side
   1,111.02x = 1,446,106.06
5. Step 5: Solve for x
   x = 1,446,106.06/1,111.02
6. Step 6: Final answer
   x = 1,301.60