Finding the Fourth Proportional to 1,086.70, 1,500.10 and 693.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.70 : 1,500.10 = 693.96 : x
2. Step 2: Convert to fraction form
   1,086.70/1,500.10 = 693.96/x
3. Step 3: Cross multiply
   1,086.70x = 1,500.10 × 693.96
4. Step 4: Simplify right side
   1,086.70x = 1,041,009.40
5. Step 5: Solve for x
   x = 1,041,009.40/1,086.70
6. Step 6: Final answer
   x = 957.95