Finding the Fourth Proportional to 1,339.63, 1,850.01 and 1,105.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.63 : 1,850.01 = 1,105.90 : x
2. Step 2: Convert to fraction form
   1,339.63/1,850.01 = 1,105.90/x
3. Step 3: Cross multiply
   1,339.63x = 1,850.01 × 1,105.90
4. Step 4: Simplify right side
   1,339.63x = 2,045,926.06
5. Step 5: Solve for x
   x = 2,045,926.06/1,339.63
6. Step 6: Final answer
   x = 1,527.23