Finding the Fourth Proportional to 3,531.51, 5,291.60 and 2,071.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,531.51 : 5,291.60 = 2,071.89 : x
2. Step 2: Convert to fraction form
   3,531.51/5,291.60 = 2,071.89/x
3. Step 3: Cross multiply
   3,531.51x = 5,291.60 × 2,071.89
4. Step 4: Simplify right side
   3,531.51x = 10,963,602.76
5. Step 5: Solve for x
   x = 10,963,602.76/3,531.51
6. Step 6: Final answer
   x = 3,104.51