Finding the Fourth Proportional to 1,917.90, 2,645.33 and 1,349.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.90 : 2,645.33 = 1,349.82 : x
2. Step 2: Convert to fraction form
   1,917.90/2,645.33 = 1,349.82/x
3. Step 3: Cross multiply
   1,917.90x = 2,645.33 × 1,349.82
4. Step 4: Simplify right side
   1,917.90x = 3,570,712.59
5. Step 5: Solve for x
   x = 3,570,712.59/1,917.90
6. Step 6: Final answer
   x = 1,861.78