Finding the Fourth Proportional to 2,111.65, 3,169.47 and 1,554.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.65 : 3,169.47 = 1,554.67 : x
2. Step 2: Convert to fraction form
   2,111.65/3,169.47 = 1,554.67/x
3. Step 3: Cross multiply
   2,111.65x = 3,169.47 × 1,554.67
4. Step 4: Simplify right side
   2,111.65x = 4,927,479.92
5. Step 5: Solve for x
   x = 4,927,479.92/2,111.65
6. Step 6: Final answer
   x = 2,333.47