Finding the Fourth Proportional to 2,505.55, 3,457.59 and 1,386.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.55 : 3,457.59 = 1,386.46 : x
2. Step 2: Convert to fraction form
   2,505.55/3,457.59 = 1,386.46/x
3. Step 3: Cross multiply
   2,505.55x = 3,457.59 × 1,386.46
4. Step 4: Simplify right side
   2,505.55x = 4,793,810.23
5. Step 5: Solve for x
   x = 4,793,810.23/2,505.55
6. Step 6: Final answer
   x = 1,913.28