Finding the Fourth Proportional to 2,075.02, 3,111.06 and 978.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.02 : 3,111.06 = 978.76 : x
2. Step 2: Convert to fraction form
   2,075.02/3,111.06 = 978.76/x
3. Step 3: Cross multiply
   2,075.02x = 3,111.06 × 978.76
4. Step 4: Simplify right side
   2,075.02x = 3,044,981.09
5. Step 5: Solve for x
   x = 3,044,981.09/2,075.02
6. Step 6: Final answer
   x = 1,467.45