Finding the Fourth Proportional to 1,354.44, 1,870.50 and 1,131.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.44 : 1,870.50 = 1,131.18 : x
2. Step 2: Convert to fraction form
   1,354.44/1,870.50 = 1,131.18/x
3. Step 3: Cross multiply
   1,354.44x = 1,870.50 × 1,131.18
4. Step 4: Simplify right side
   1,354.44x = 2,115,872.19
5. Step 5: Solve for x
   x = 2,115,872.19/1,354.44
6. Step 6: Final answer
   x = 1,562.17