Finding the Fourth Proportional to 1,360.99, 1,878.18 and 763.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.99 : 1,878.18 = 763.62 : x
2. Step 2: Convert to fraction form
   1,360.99/1,878.18 = 763.62/x
3. Step 3: Cross multiply
   1,360.99x = 1,878.18 × 763.62
4. Step 4: Simplify right side
   1,360.99x = 1,434,211.63
5. Step 5: Solve for x
   x = 1,434,211.63/1,360.99
6. Step 6: Final answer
   x = 1,053.80