Finding the Fourth Proportional to 1,083.56, 1,494.76 and 690.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.56 : 1,494.76 = 690.72 : x
2. Step 2: Convert to fraction form
   1,083.56/1,494.76 = 690.72/x
3. Step 3: Cross multiply
   1,083.56x = 1,494.76 × 690.72
4. Step 4: Simplify right side
   1,083.56x = 1,032,460.63
5. Step 5: Solve for x
   x = 1,032,460.63/1,083.56
6. Step 6: Final answer
   x = 952.84