Finding the Fourth Proportional to 1,978.18, 2,967.68 and 591.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.18 : 2,967.68 = 591.46 : x
2. Step 2: Convert to fraction form
   1,978.18/2,967.68 = 591.46/x
3. Step 3: Cross multiply
   1,978.18x = 2,967.68 × 591.46
4. Step 4: Simplify right side
   1,978.18x = 1,755,264.01
5. Step 5: Solve for x
   x = 1,755,264.01/1,978.18
6. Step 6: Final answer
   x = 887.31