Finding the Fourth Proportional to 2,100.93, 2,898.50 and 1,261.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.93 : 2,898.50 = 1,261.31 : x
2. Step 2: Convert to fraction form
   2,100.93/2,898.50 = 1,261.31/x
3. Step 3: Cross multiply
   2,100.93x = 2,898.50 × 1,261.31
4. Step 4: Simplify right side
   2,100.93x = 3,655,917.43
5. Step 5: Solve for x
   x = 3,655,917.43/2,100.93
6. Step 6: Final answer
   x = 1,740.14