Finding the Fourth Proportional to 2,980.35, 4,111.29 and 1,901.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,980.35 : 4,111.29 = 1,901.61 : x
2. Step 2: Convert to fraction form
   2,980.35/4,111.29 = 1,901.61/x
3. Step 3: Cross multiply
   2,980.35x = 4,111.29 × 1,901.61
4. Step 4: Simplify right side
   2,980.35x = 7,818,070.18
5. Step 5: Solve for x
   x = 7,818,070.18/2,980.35
6. Step 6: Final answer
   x = 2,623.21