Finding the Fourth Proportional to 1,527.21, 2,111.00 and 1,137.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,527.21 : 2,111.00 = 1,137.87 : x
2. Step 2: Convert to fraction form
   1,527.21/2,111.00 = 1,137.87/x
3. Step 3: Cross multiply
   1,527.21x = 2,111.00 × 1,137.87
4. Step 4: Simplify right side
   1,527.21x = 2,402,037.88
5. Step 5: Solve for x
   x = 2,402,037.88/1,527.21
6. Step 6: Final answer
   x = 1,572.83