Finding the Fourth Proportional to 1,436.86, 2,155.98 and 1,090.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.86 : 2,155.98 = 1,090.06 : x
2. Step 2: Convert to fraction form
   1,436.86/2,155.98 = 1,090.06/x
3. Step 3: Cross multiply
   1,436.86x = 2,155.98 × 1,090.06
4. Step 4: Simplify right side
   1,436.86x = 2,350,147.56
5. Step 5: Solve for x
   x = 2,350,147.56/1,436.86
6. Step 6: Final answer
   x = 1,635.61