Finding the Fourth Proportional to 1,308.74, 1,962.42 and 691.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.74 : 1,962.42 = 691.94 : x
2. Step 2: Convert to fraction form
   1,308.74/1,962.42 = 691.94/x
3. Step 3: Cross multiply
   1,308.74x = 1,962.42 × 691.94
4. Step 4: Simplify right side
   1,308.74x = 1,357,876.89
5. Step 5: Solve for x
   x = 1,357,876.89/1,308.74
6. Step 6: Final answer
   x = 1,037.55