Finding the Fourth Proportional to 1,681.03, 2,516.27 and 1,087.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,681.03 : 2,516.27 = 1,087.25 : x
2. Step 2: Convert to fraction form
   1,681.03/2,516.27 = 1,087.25/x
3. Step 3: Cross multiply
   1,681.03x = 2,516.27 × 1,087.25
4. Step 4: Simplify right side
   1,681.03x = 2,735,829.86
5. Step 5: Solve for x
   x = 2,735,829.86/1,681.03
6. Step 6: Final answer
   x = 1,627.47