Finding the Fourth Proportional to 1,109.94, 1,666.80 and 1,063.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.94 : 1,666.80 = 1,063.50 : x
2. Step 2: Convert to fraction form
   1,109.94/1,666.80 = 1,063.50/x
3. Step 3: Cross multiply
   1,109.94x = 1,666.80 × 1,063.50
4. Step 4: Simplify right side
   1,109.94x = 1,772,641.80
5. Step 5: Solve for x
   x = 1,772,641.80/1,109.94
6. Step 6: Final answer
   x = 1,597.06