Finding the Fourth Proportional to 1,909.90, 2,630.82 and 1,349.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,909.90 : 2,630.82 = 1,349.38 : x
2. Step 2: Convert to fraction form
   1,909.90/2,630.82 = 1,349.38/x
3. Step 3: Cross multiply
   1,909.90x = 2,630.82 × 1,349.38
4. Step 4: Simplify right side
   1,909.90x = 3,549,975.89
5. Step 5: Solve for x
   x = 3,549,975.89/1,909.90
6. Step 6: Final answer
   x = 1,858.72