Finding the Fourth Proportional to 1,085.30, 1,620.02 and 1,037.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.30 : 1,620.02 = 1,037.96 : x
2. Step 2: Convert to fraction form
   1,085.30/1,620.02 = 1,037.96/x
3. Step 3: Cross multiply
   1,085.30x = 1,620.02 × 1,037.96
4. Step 4: Simplify right side
   1,085.30x = 1,681,515.96
5. Step 5: Solve for x
   x = 1,681,515.96/1,085.30
6. Step 6: Final answer
   x = 1,549.36