Finding the Fourth Proportional to 1,858.41, 2,561.89 and 1,415.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,858.41 : 2,561.89 = 1,415.54 : x
2. Step 2: Convert to fraction form
   1,858.41/2,561.89 = 1,415.54/x
3. Step 3: Cross multiply
   1,858.41x = 2,561.89 × 1,415.54
4. Step 4: Simplify right side
   1,858.41x = 3,626,457.77
5. Step 5: Solve for x
   x = 3,626,457.77/1,858.41
6. Step 6: Final answer
   x = 1,951.38