Finding the Fourth Proportional to 2,030.08, 3,040.72 and 987.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,030.08 : 3,040.72 = 987.90 : x
2. Step 2: Convert to fraction form
   2,030.08/3,040.72 = 987.90/x
3. Step 3: Cross multiply
   2,030.08x = 3,040.72 × 987.90
4. Step 4: Simplify right side
   2,030.08x = 3,003,927.29
5. Step 5: Solve for x
   x = 3,003,927.29/2,030.08
6. Step 6: Final answer
   x = 1,479.71