Finding the Fourth Proportional to 2,116.10, 2,920.37 and 1,277.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.10 : 2,920.37 = 1,277.01 : x
2. Step 2: Convert to fraction form
   2,116.10/2,920.37 = 1,277.01/x
3. Step 3: Cross multiply
   2,116.10x = 2,920.37 × 1,277.01
4. Step 4: Simplify right side
   2,116.10x = 3,729,335.31
5. Step 5: Solve for x
   x = 3,729,335.31/2,116.10
6. Step 6: Final answer
   x = 1,762.37