Finding the Fourth Proportional to 1,987.79, 2,981.56 and 601.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.79 : 2,981.56 = 601.10 : x
2. Step 2: Convert to fraction form
   1,987.79/2,981.56 = 601.10/x
3. Step 3: Cross multiply
   1,987.79x = 2,981.56 × 601.10
4. Step 4: Simplify right side
   1,987.79x = 1,792,215.72
5. Step 5: Solve for x
   x = 1,792,215.72/1,987.79
6. Step 6: Final answer
   x = 901.61