Finding the Fourth Proportional to 1,670.52, 2,506.05 and 696.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,670.52 : 2,506.05 = 696.72 : x
2. Step 2: Convert to fraction form
   1,670.52/2,506.05 = 696.72/x
3. Step 3: Cross multiply
   1,670.52x = 2,506.05 × 696.72
4. Step 4: Simplify right side
   1,670.52x = 1,746,015.16
5. Step 5: Solve for x
   x = 1,746,015.16/1,670.52
6. Step 6: Final answer
   x = 1,045.19