Finding the Fourth Proportional to 1,345.50, 1,855.82 and 947.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.50 : 1,855.82 = 947.98 : x
2. Step 2: Convert to fraction form
   1,345.50/1,855.82 = 947.98/x
3. Step 3: Cross multiply
   1,345.50x = 1,855.82 × 947.98
4. Step 4: Simplify right side
   1,345.50x = 1,759,280.24
5. Step 5: Solve for x
   x = 1,759,280.24/1,345.50
6. Step 6: Final answer
   x = 1,307.53