Finding the Fourth Proportional to 1,936.51, 2,672.43 and 1,085.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,936.51 : 2,672.43 = 1,085.87 : x
2. Step 2: Convert to fraction form
   1,936.51/2,672.43 = 1,085.87/x
3. Step 3: Cross multiply
   1,936.51x = 2,672.43 × 1,085.87
4. Step 4: Simplify right side
   1,936.51x = 2,901,914.17
5. Step 5: Solve for x
   x = 2,901,914.17/1,936.51
6. Step 6: Final answer
   x = 1,498.53