Finding the Fourth Proportional to 1,690.27, 2,329.93 and 1,554.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,690.27 : 2,329.93 = 1,554.50 : x
2. Step 2: Convert to fraction form
   1,690.27/2,329.93 = 1,554.50/x
3. Step 3: Cross multiply
   1,690.27x = 2,329.93 × 1,554.50
4. Step 4: Simplify right side
   1,690.27x = 3,621,867.45
5. Step 5: Solve for x
   x = 3,621,867.45/1,690.27
6. Step 6: Final answer
   x = 2,142.77