Finding the Fourth Proportional to 1,372.03, 1,892.93 and 782.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.03 : 1,892.93 = 782.15 : x
2. Step 2: Convert to fraction form
   1,372.03/1,892.93 = 782.15/x
3. Step 3: Cross multiply
   1,372.03x = 1,892.93 × 782.15
4. Step 4: Simplify right side
   1,372.03x = 1,480,541.82
5. Step 5: Solve for x
   x = 1,480,541.82/1,372.03
6. Step 6: Final answer
   x = 1,079.09