Finding the Fourth Proportional to 1,981.80, 2,971.62 and 1,008.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.80 : 2,971.62 = 1,008.72 : x
2. Step 2: Convert to fraction form
   1,981.80/2,971.62 = 1,008.72/x
3. Step 3: Cross multiply
   1,981.80x = 2,971.62 × 1,008.72
4. Step 4: Simplify right side
   1,981.80x = 2,997,532.53
5. Step 5: Solve for x
   x = 2,997,532.53/1,981.80
6. Step 6: Final answer
   x = 1,512.53