Finding the Fourth Proportional to 2,011.33, 2,774.27 and 1,638.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.33 : 2,774.27 = 1,638.32 : x
2. Step 2: Convert to fraction form
   2,011.33/2,774.27 = 1,638.32/x
3. Step 3: Cross multiply
   2,011.33x = 2,774.27 × 1,638.32
4. Step 4: Simplify right side
   2,011.33x = 4,545,133.83
5. Step 5: Solve for x
   x = 4,545,133.83/2,011.33
6. Step 6: Final answer
   x = 2,259.77