Finding the Fourth Proportional to 1,377.01, 2,066.54 and 761.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.01 : 2,066.54 = 761.25 : x
2. Step 2: Convert to fraction form
   1,377.01/2,066.54 = 761.25/x
3. Step 3: Cross multiply
   1,377.01x = 2,066.54 × 761.25
4. Step 4: Simplify right side
   1,377.01x = 1,573,153.58
5. Step 5: Solve for x
   x = 1,573,153.58/1,377.01
6. Step 6: Final answer
   x = 1,142.44