Finding the Fourth Proportional to 1,503.49, 2,074.61 and 840.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,503.49 : 2,074.61 = 840.37 : x
2. Step 2: Convert to fraction form
   1,503.49/2,074.61 = 840.37/x
3. Step 3: Cross multiply
   1,503.49x = 2,074.61 × 840.37
4. Step 4: Simplify right side
   1,503.49x = 1,743,440.01
5. Step 5: Solve for x
   x = 1,743,440.01/1,503.49
6. Step 6: Final answer
   x = 1,159.60