Finding the Fourth Proportional to 1,365.31, 1,889.04 and 1,190.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365.31 : 1,889.04 = 1,190.98 : x
2. Step 2: Convert to fraction form
   1,365.31/1,889.04 = 1,190.98/x
3. Step 3: Cross multiply
   1,365.31x = 1,889.04 × 1,190.98
4. Step 4: Simplify right side
   1,365.31x = 2,249,808.86
5. Step 5: Solve for x
   x = 2,249,808.86/1,365.31
6. Step 6: Final answer
   x = 1,647.84