Finding the Fourth Proportional to 1,698.81, 2,544.72 and 1,557.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,698.81 : 2,544.72 = 1,557.06 : x
2. Step 2: Convert to fraction form
   1,698.81/2,544.72 = 1,557.06/x
3. Step 3: Cross multiply
   1,698.81x = 2,544.72 × 1,557.06
4. Step 4: Simplify right side
   1,698.81x = 3,962,281.72
5. Step 5: Solve for x
   x = 3,962,281.72/1,698.81
6. Step 6: Final answer
   x = 2,332.39