Finding the Fourth Proportional to 1,097.10, 1,510.56 and 930.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.10 : 1,510.56 = 930.96 : x
2. Step 2: Convert to fraction form
   1,097.10/1,510.56 = 930.96/x
3. Step 3: Cross multiply
   1,097.10x = 1,510.56 × 930.96
4. Step 4: Simplify right side
   1,097.10x = 1,406,270.94
5. Step 5: Solve for x
   x = 1,406,270.94/1,097.10
6. Step 6: Final answer
   x = 1,281.81