Finding the Fourth Proportional to 1,677.41, 2,316.71 and 1,145.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.41 : 2,316.71 = 1,145.37 : x
2. Step 2: Convert to fraction form
   1,677.41/2,316.71 = 1,145.37/x
3. Step 3: Cross multiply
   1,677.41x = 2,316.71 × 1,145.37
4. Step 4: Simplify right side
   1,677.41x = 2,653,484.41
5. Step 5: Solve for x
   x = 2,653,484.41/1,677.41
6. Step 6: Final answer
   x = 1,581.90