Finding the Fourth Proportional to 1,503.84, 2,075.16 and 840.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,503.84 : 2,075.16 = 840.72 : x
2. Step 2: Convert to fraction form
   1,503.84/2,075.16 = 840.72/x
3. Step 3: Cross multiply
   1,503.84x = 2,075.16 × 840.72
4. Step 4: Simplify right side
   1,503.84x = 1,744,628.52
5. Step 5: Solve for x
   x = 1,744,628.52/1,503.84
6. Step 6: Final answer
   x = 1,160.12