Finding the Fourth Proportional to 2,079.04, 3,117.52 and 691.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.04 : 3,117.52 = 691.89 : x
2. Step 2: Convert to fraction form
   2,079.04/3,117.52 = 691.89/x
3. Step 3: Cross multiply
   2,079.04x = 3,117.52 × 691.89
4. Step 4: Simplify right side
   2,079.04x = 2,156,980.91
5. Step 5: Solve for x
   x = 2,156,980.91/2,079.04
6. Step 6: Final answer
   x = 1,037.49