Finding the Fourth Proportional to 1,359.42, 1,875.90 and 761.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.42 : 1,875.90 = 761.91 : x
2. Step 2: Convert to fraction form
   1,359.42/1,875.90 = 761.91/x
3. Step 3: Cross multiply
   1,359.42x = 1,875.90 × 761.91
4. Step 4: Simplify right side
   1,359.42x = 1,429,266.97
5. Step 5: Solve for x
   x = 1,429,266.97/1,359.42
6. Step 6: Final answer
   x = 1,051.38