Finding the Fourth Proportional to 2,526.81, 3,486.96 and 1,407.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,526.81 : 3,486.96 = 1,407.69 : x
2. Step 2: Convert to fraction form
   2,526.81/3,486.96 = 1,407.69/x
3. Step 3: Cross multiply
   2,526.81x = 3,486.96 × 1,407.69
4. Step 4: Simplify right side
   2,526.81x = 4,908,558.72
5. Step 5: Solve for x
   x = 4,908,558.72/2,526.81
6. Step 6: Final answer
   x = 1,942.59