Finding the Fourth Proportional to 1,987.71, 2,980.89 and 754.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.71 : 2,980.89 = 754.82 : x
2. Step 2: Convert to fraction form
   1,987.71/2,980.89 = 754.82/x
3. Step 3: Cross multiply
   1,987.71x = 2,980.89 × 754.82
4. Step 4: Simplify right side
   1,987.71x = 2,250,042.84
5. Step 5: Solve for x
   x = 2,250,042.84/1,987.71
6. Step 6: Final answer
   x = 1,131.98