Finding the Fourth Proportional to 1,839.78, 2,758.86 and 973.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,839.78 : 2,758.86 = 973.89 : x
2. Step 2: Convert to fraction form
   1,839.78/2,758.86 = 973.89/x
3. Step 3: Cross multiply
   1,839.78x = 2,758.86 × 973.89
4. Step 4: Simplify right side
   1,839.78x = 2,686,826.17
5. Step 5: Solve for x
   x = 2,686,826.17/1,839.78
6. Step 6: Final answer
   x = 1,460.41