Finding the Fourth Proportional to 1,870.10, 2,803.08 and 773.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.10 : 2,803.08 = 773.86 : x
2. Step 2: Convert to fraction form
   1,870.10/2,803.08 = 773.86/x
3. Step 3: Cross multiply
   1,870.10x = 2,803.08 × 773.86
4. Step 4: Simplify right side
   1,870.10x = 2,169,191.49
5. Step 5: Solve for x
   x = 2,169,191.49/1,870.10
6. Step 6: Final answer
   x = 1,159.93