Finding the Fourth Proportional to 1,381.83, 1,907.34 and 1,101.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.83 : 1,907.34 = 1,101.96 : x
2. Step 2: Convert to fraction form
   1,381.83/1,907.34 = 1,101.96/x
3. Step 3: Cross multiply
   1,381.83x = 1,907.34 × 1,101.96
4. Step 4: Simplify right side
   1,381.83x = 2,101,812.39
5. Step 5: Solve for x
   x = 2,101,812.39/1,381.83
6. Step 6: Final answer
   x = 1,521.04