Finding the Fourth Proportional to 1,736.22, 2,396.01 and 990.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,736.22 : 2,396.01 = 990.15 : x
2. Step 2: Convert to fraction form
   1,736.22/2,396.01 = 990.15/x
3. Step 3: Cross multiply
   1,736.22x = 2,396.01 × 990.15
4. Step 4: Simplify right side
   1,736.22x = 2,372,409.30
5. Step 5: Solve for x
   x = 2,372,409.30/1,736.22
6. Step 6: Final answer
   x = 1,366.42