Finding the Fourth Proportional to 1,503.72, 2,075.16 and 914.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,503.72 : 2,075.16 = 914.28 : x
2. Step 2: Convert to fraction form
   1,503.72/2,075.16 = 914.28/x
3. Step 3: Cross multiply
   1,503.72x = 2,075.16 × 914.28
4. Step 4: Simplify right side
   1,503.72x = 1,897,277.28
5. Step 5: Solve for x
   x = 1,897,277.28/1,503.72
6. Step 6: Final answer
   x = 1,261.72