Finding the Fourth Proportional to 1,377.45, 1,900.88 and 788.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.45 : 1,900.88 = 788.00 : x
2. Step 2: Convert to fraction form
   1,377.45/1,900.88 = 788.00/x
3. Step 3: Cross multiply
   1,377.45x = 1,900.88 × 788.00
4. Step 4: Simplify right side
   1,377.45x = 1,497,880.00
5. Step 5: Solve for x
   x = 1,497,880.00/1,377.45
6. Step 6: Final answer
   x = 1,087.43