Finding the Fourth Proportional to 2,699.18, 4,045.07 and 1,380.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,699.18 : 4,045.07 = 1,380.17 : x
2. Step 2: Convert to fraction form
   2,699.18/4,045.07 = 1,380.17/x
3. Step 3: Cross multiply
   2,699.18x = 4,045.07 × 1,380.17
4. Step 4: Simplify right side
   2,699.18x = 5,582,897.83
5. Step 5: Solve for x
   x = 5,582,897.83/2,699.18
6. Step 6: Final answer
   x = 2,068.37