Finding the Fourth Proportional to 1,054.02, 1,587.16 and 782.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.02 : 1,587.16 = 782.04 : x
2. Step 2: Convert to fraction form
   1,054.02/1,587.16 = 782.04/x
3. Step 3: Cross multiply
   1,054.02x = 1,587.16 × 782.04
4. Step 4: Simplify right side
   1,054.02x = 1,241,222.61
5. Step 5: Solve for x
   x = 1,241,222.61/1,054.02
6. Step 6: Final answer
   x = 1,177.61