Finding the Fourth Proportional to 1,437.90, 1,985.25 and 1,105.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.90 : 1,985.25 = 1,105.74 : x
2. Step 2: Convert to fraction form
   1,437.90/1,985.25 = 1,105.74/x
3. Step 3: Cross multiply
   1,437.90x = 1,985.25 × 1,105.74
4. Step 4: Simplify right side
   1,437.90x = 2,195,170.34
5. Step 5: Solve for x
   x = 2,195,170.34/1,437.90
6. Step 6: Final answer
   x = 1,526.65