Finding the Fourth Proportional to 1,540.60, 2,126.71 and 1,186.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540.60 : 2,126.71 = 1,186.39 : x
2. Step 2: Convert to fraction form
   1,540.60/2,126.71 = 1,186.39/x
3. Step 3: Cross multiply
   1,540.60x = 2,126.71 × 1,186.39
4. Step 4: Simplify right side
   1,540.60x = 2,523,111.62
5. Step 5: Solve for x
   x = 2,523,111.62/1,540.60
6. Step 6: Final answer
   x = 1,637.75