Finding the Fourth Proportional to 1,858.47, 2,784.83 and 761.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,858.47 : 2,784.83 = 761.91 : x
2. Step 2: Convert to fraction form
   1,858.47/2,784.83 = 761.91/x
3. Step 3: Cross multiply
   1,858.47x = 2,784.83 × 761.91
4. Step 4: Simplify right side
   1,858.47x = 2,121,786.02
5. Step 5: Solve for x
   x = 2,121,786.02/1,858.47
6. Step 6: Final answer
   x = 1,141.68