Finding the Fourth Proportional to 2,670.61, 4,004.84 and 1,109.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,670.61 : 4,004.84 = 1,109.55 : x
2. Step 2: Convert to fraction form
   2,670.61/4,004.84 = 1,109.55/x
3. Step 3: Cross multiply
   2,670.61x = 4,004.84 × 1,109.55
4. Step 4: Simplify right side
   2,670.61x = 4,443,570.22
5. Step 5: Solve for x
   x = 4,443,570.22/2,670.61
6. Step 6: Final answer
   x = 1,663.88