Finding the Fourth Proportional to 1,385.84, 2,075.04 and 1,016.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.84 : 2,075.04 = 1,016.48 : x
2. Step 2: Convert to fraction form
   1,385.84/2,075.04 = 1,016.48/x
3. Step 3: Cross multiply
   1,385.84x = 2,075.04 × 1,016.48
4. Step 4: Simplify right side
   1,385.84x = 2,109,236.66
5. Step 5: Solve for x
   x = 2,109,236.66/1,385.84
6. Step 6: Final answer
   x = 1,521.99