Finding the Fourth Proportional to 1,669.90, 2,505.12 and 696.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.90 : 2,505.12 = 696.10 : x
2. Step 2: Convert to fraction form
   1,669.90/2,505.12 = 696.10/x
3. Step 3: Cross multiply
   1,669.90x = 2,505.12 × 696.10
4. Step 4: Simplify right side
   1,669.90x = 1,743,798.03
5. Step 5: Solve for x
   x = 1,743,798.03/1,669.90
6. Step 6: Final answer
   x = 1,044.26