Finding the Fourth Proportional to 1,375.04, 1,897.37 and 777.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.04 : 1,897.37 = 777.53 : x
2. Step 2: Convert to fraction form
   1,375.04/1,897.37 = 777.53/x
3. Step 3: Cross multiply
   1,375.04x = 1,897.37 × 777.53
4. Step 4: Simplify right side
   1,375.04x = 1,475,262.10
5. Step 5: Solve for x
   x = 1,475,262.10/1,375.04
6. Step 6: Final answer
   x = 1,072.89