Finding the Fourth Proportional to 1,061.12, 1,590.52 and 696.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.12 : 1,590.52 = 696.16 : x
2. Step 2: Convert to fraction form
   1,061.12/1,590.52 = 696.16/x
3. Step 3: Cross multiply
   1,061.12x = 1,590.52 × 696.16
4. Step 4: Simplify right side
   1,061.12x = 1,107,256.40
5. Step 5: Solve for x
   x = 1,107,256.40/1,061.12
6. Step 6: Final answer
   x = 1,043.48