Finding the Fourth Proportional to 1,698.60, 2,516.52 and 1,633.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,698.60 : 2,516.52 = 1,633.80 : x
2. Step 2: Convert to fraction form
   1,698.60/2,516.52 = 1,633.80/x
3. Step 3: Cross multiply
   1,698.60x = 2,516.52 × 1,633.80
4. Step 4: Simplify right side
   1,698.60x = 4,111,490.38
5. Step 5: Solve for x
   x = 4,111,490.38/1,698.60
6. Step 6: Final answer
   x = 2,420.52