Finding the Fourth Proportional to 1,359.35, 1,875.49 and 761.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.35 : 1,875.49 = 761.78 : x
2. Step 2: Convert to fraction form
   1,359.35/1,875.49 = 761.78/x
3. Step 3: Cross multiply
   1,359.35x = 1,875.49 × 761.78
4. Step 4: Simplify right side
   1,359.35x = 1,428,710.77
5. Step 5: Solve for x
   x = 1,428,710.77/1,359.35
6. Step 6: Final answer
   x = 1,051.02