Finding the Fourth Proportional to 1,487.33, 2,052.61 and 857.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,487.33 : 2,052.61 = 857.98 : x
2. Step 2: Convert to fraction form
   1,487.33/2,052.61 = 857.98/x
3. Step 3: Cross multiply
   1,487.33x = 2,052.61 × 857.98
4. Step 4: Simplify right side
   1,487.33x = 1,761,088.06
5. Step 5: Solve for x
   x = 1,761,088.06/1,487.33
6. Step 6: Final answer
   x = 1,184.06