Finding the Fourth Proportional to 2,507.88, 3,461.00 and 1,388.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.88 : 3,461.00 = 1,388.94 : x
2. Step 2: Convert to fraction form
   2,507.88/3,461.00 = 1,388.94/x
3. Step 3: Cross multiply
   2,507.88x = 3,461.00 × 1,388.94
4. Step 4: Simplify right side
   2,507.88x = 4,807,114.40
5. Step 5: Solve for x
   x = 4,807,114.40/2,507.88
6. Step 6: Final answer
   x = 1,916.80