Finding the Fourth Proportional to 1,987.22, 2,980.89 and 1,696.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.22 : 2,980.89 = 1,696.83 : x
2. Step 2: Convert to fraction form
   1,987.22/2,980.89 = 1,696.83/x
3. Step 3: Cross multiply
   1,987.22x = 2,980.89 × 1,696.83
4. Step 4: Simplify right side
   1,987.22x = 5,058,063.58
5. Step 5: Solve for x
   x = 5,058,063.58/1,987.22
6. Step 6: Final answer
   x = 2,545.30